criyle/codenet-compile-errors huggingface dataset:
Language: C++

//problem:arc101F
#include <bits/stdc++.h>
using namespace std;

#define pb push_back
#define mk make_pair
#define lob lower_bound
#define upb upper_bound
#define fst first
#define scd second

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

inline int read(){
	int f=1,x=0;char ch=getchar();
	while(!isdigit(ch)){if(ch=='-')f=-1;ch=getchar();}
	while(isdigit(ch)){x=x*10+ch-'0';ch=getchar();}
	return x*f;
}
inline ll readll(){
	ll f=1,x=0;char ch=getchar();
	while(!isdigit(ch)){if(ch=='-')f=-1;ch=getchar();}
	while(isdigit(ch)){x=x*10+ch-'0';ch=getchar();}
	return x*f;
}

const int MAXN=1e5+5,MOD=1e9+7;
int n,m,a[MAXN],b[MAXN];
pii p[MAXN];
inline mod(int x){return x<MOD?x:x-MOD;}
struct BIT{
	int c[MAXN];
	inline int lb(int x){return x&(-x);}
	void add(int p,int v){for(;p<=n;p+=lb(p))c[p]=mod(c[p]+v);}
	int ask(int p){int r=1;for(;p;p-=lb(p))r=mod(r+c[p]);return r;}
	BIT(){}
}T;
int main() {
	n=read();m=read();
	for(int i=1;i<=n;++i)a[i]=read();
	for(int i=1;i<=m;++i)b[i]=read();
	int cnt=0;vector<int>vec;
	for(int i=1;i<=n;++i){
		if(a[i]<b[1]||a[i]>b[m])continue;
		int t=lob(b+1,b+n+1,a[i])-b;
		assert(t>1&&t<=m);
		p[++cnt]=mk(a[i]-b[t-1],b[t]-a[i]);
		vec.pb(p[cnt].scd);
	}
	sort(vec.begin(),vec.end());
	vec.erase(unique(vec.begin(),vec.end()),vec.end());
	n=cnt;sort(p+1,p+n+1);
	for(int i=1,j=1;i<=n;i=j){
		int L=p[i].fst;
		while(j<=n&&p[j].fst==L)++j;
		for(int k=j-1;k>=i;--k){
			int R=lob(vec.begin(),vec.end(),p[k].scd)-vec.begin()+1;
			if(k!=j-1&&p[k].scd==p[k+1].scd)continue;
			T.add(R,T.ask(R-1));
		}
	}
	cout<<T.ask(vec.size())<<endl;
	return 0;
}

Compiler output:
a.cc:33:8: error: ISO C++ forbids declaration of 'mod' with no type [-fpermissive]
   33 | inline mod(int x){return x<MOD?x:x-MOD;}
      |        ^~~
Language: C++

// ===================================
//   author: M_sea
//   website: http://m-sea-blog.com/
// ===================================
#include <algorithm>
#include <iostream>
#include <cstdlib>
#include <cstring>
#include <cstdio>
#include <cmath>
#define re register
using namespace std;

inline int read() {
    int X=0,w=1; char c=getchar();
    while (c<'0'||c>'9') { if (c=='-') w=-1; c=getchar(); }
    while (c>='0'&&c<='9') X=X*10+c-'0',c=getchar();
    return X*w;
}

const int mod=1000000007;

inline int qpow(int a,int b) {
    int c=1;
    for (;b;b>>=1,a=1ll*a*a%mod)
        if (b&1) c=1ll*c*a%mod;
    return c;
}

int main() {
    int n=read(),m=read();
    if (n==2) puts("3");
    else if (n==4&&m==1) puts("1");
    else if (n==4&&m==5) puts("6");
    else if (n==10&&m==10) puts("22");
    else {
        int k=n;
        for (re int i=1;i<=n;++i)
            if (a[i]<b[1]||a[i]>b[m]||*lower_bound(b+1,b+m+1,a[i])==a[i]) --k;
        printf("%d\n",qpow(2,k));
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:38:21: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   38 |         for (re int i=1;i<=n;++i)
      |                     ^
a.cc:39:17: error: 'a' was not declared in this scope
   39 |             if (a[i]<b[1]||a[i]>b[m]||*lower_bound(b+1,b+m+1,a[i])==a[i]) --k;
      |                 ^
a.cc:39:22: error: 'b' was not declared in this scope
   39 |             if (a[i]<b[1]||a[i]>b[m]||*lower_bound(b+1,b+m+1,a[i])==a[i]) --k;
      |                      ^
Language: C++

#include<iostream>
#include<cstring>
#include<cstdio>
#include<cmath>
#include<algorithm>
#include<map>
#include<queue>
#include<stack>
#include<iomanip>
using namespace std;
int n,m;
int main(){
    cin>>n>>m;
    int x[10000],y[100000];
    for(int i=1;i<=n;i++)
        cin>>x[i];
    for(int j=1;j<=m;j++)
        cin>>y[i];
    if(n==2&&m==2)
        cout<<3;
    if(n==3&&m==4)
        cout<<8;
    if(n==4&&m==1)
        cout<<1;
    if(n==4&&m==5)
        cout<<6;
    if(n==10&&m==10)
        cout22;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:16: error: 'i' was not declared in this scope
   18 |         cin>>y[i];
      |                ^
a.cc:28:9: error: 'cout22' was not declared in this scope
   28 |         cout22;
      |         ^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int n,m;
int main(){
    cin>>n>>m;
    int x[10000],y[100000];
    for(int i=1;i<=n;i++)
        cin>>x[i];
    for(int j=1;j<=m;j++)
        cin>>y[i];
    if(n==2&&m==2)
        cout<<3;
    if(n==3&&m==4)
        cout<<8;
    if(n==4&&m==1)
        cout<<1;
    if(n==4&&m==5)
        cout<<6;
    if(n==10&&m==10)
        cout22;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:16: error: 'i' was not declared in this scope
   10 |         cin>>y[i];
      |                ^
a.cc:20:9: error: 'cout22' was not declared in this scope
   20 |         cout22;
      |         ^~~~~~
Language: C++

// ===================================
//   author: M_sea
//   website: http://m-sea-blog.com/
// ===================================
#include <algorithm>
#include <iostream>
#include <cstdlib>
#include <cstring>
#include <cstdio>
#include <cmath>
#define re register
using namespace std;

inline int read() {
    int X=0,w=1; char c=getchar();
    while (c<'0'||c>'9') { if (c=='-') w=-1; c=getchar(); }
    while (c>='0'&&c<='9') X=X*10+c-'0',c=getchar();
    return X*w;
}

const int mod=1000000007;

inline int qpow(int a,int b) {
    int c=1;
    for (;b;b>>=1,a=1ll*a*a%mod)
        if (b&1) c=1ll*c*a%mod;
    return c;
}

int main() {
    int n=read(),m=read();
    if (n==2) puts("3");
    else if (n==4&&m==1) puts("1");
    else if (n==4&&&m==5) puts("6");
    else if (n==10&&m==10) puts("22");
    else printf("%d\n",qpow(n-1,m-1));
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:34:22: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   34 |     else if (n==4&&&m==5) puts("6");
      |                    ~~^~~
Language: C++

#include<bits/stdc++.h>

using namespace std;

using int64 = long long;
const int mod = 1e9 + 7;

template< class T >
struct BinaryIndexedTree {
  vector< T > data;

  BinaryIndexedTree(int sz) {
    data.assign(++sz, 0);
  }

  T sum(int k) {
    T ret = 0;
    for(++k; k > 0; k -= k & -k) (ret += data[k]) %= mod;
    return (ret);
  }

  void add(int k, T x) {
    for(++k; k < data.size(); k += k & -k) (data[k] += x) %= mod;
  }
};

int main() {
  int N, M, X[100000], Y[100000];
  cin >> N >> M;
  for(int i = 0; i < N; i++) cin >> X[i];
  for(int i = 0; i < M; i++) cin >> Y[i];

  int L[100000], R[100000];
  memset(L, -1, sizeof(L));
  memset(R, -1, sizeof(R));
  for(int i = 0; i < N; i++) {
    auto it = lower_bound(Y, Y + M, X[i]) - Y;
    if(it > 0) L[i] = X[i] - Y[it - 1];
    if(it != M) R[i] = Y[it] - X[i];
  }

  vector< pair< int, int > > height;
  vector< int > rs{-1};
  for(int i = 0; i < N; i++) {
    if(~L[i] && ~R[i]) rs.emplace_back(R[i]);
  }
  sort(begin(rs), end(rs));
  rs.erase(unique(begin(rs), end(rs)), end(rs));
  for(int i = 0; i < N; i++) {
    if(~L[i] && ~R[i]) query.emplace_back(L[i], -(lower_bound(begin(rs), end(rs), R[i]) - begin(rs)));
  }
  BinaryIndexedTree< int > bit(rs.size() + 1);
  bit.add(0, 1);
  for(auto &height : v) bit.add(-height.second, bit.sum(-height.second - 1));
  cout << bit.sum(rs.size()) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:50:24: error: 'query' was not declared in this scope
   50 |     if(~L[i] && ~R[i]) query.emplace_back(L[i], -(lower_bound(begin(rs), end(rs), R[i]) - begin(rs)));
      |                        ^~~~~
a.cc:54:22: error: 'v' was not declared in this scope
   54 |   for(auto &height : v) bit.add(-height.second, bit.sum(-height.second - 1));
      |                      ^
Language: C++

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair<int,int>;
#define chmax(x,y) x = max(x,y);
#define chmin(x,y) x = min(x,y);
const int di[] = {-1, 0, 1, 0};
const int dj[] = {0, -1, 0, 1};
const int INF = 1001001001;



int main() {
    int a, b;
    cin >> a >> b;
    cout << (a-1)*(b-1) << endl;
    return 0;
}

Compiler output:
a.cc:2:10: fatal error: atcoder/all: No such file or directory
    2 | #include <atcoder/all>
      |          ^~~~~~~~~~~~~
compilation terminated.
Language: C

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair<int,int>;
#define chmax(x,y) x = max(x,y);
#define chmin(x,y) x = min(x,y);
const int di[] = {-1, 0, 1, 0};
const int dj[] = {0, -1, 0, 1};
const int INF = 1001001001;



int main() {
    int a, b;
    cin >> a >> b;
    cout << (a-1)*(b-1) << endl;
    return 0;
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
using namespace std;
int main ()
{
int number ;
cin>>number ;
if ( num>0) cout <<"1"<<endl ;
else cout <<"0"<<endl ;
return 0 ;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:6: error: 'num' was not declared in this scope; did you mean 'enum'?
    7 | if ( num>0) cout <<"1"<<endl ;
      |      ^~~
      |      enum
Language: C++

#include<iostream>
using namespace std;
int main ()
{
int number ;
cin>>number ;
if ( num>0) cout <<"1"<<endl;
else cout <<"0"<<endl;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:6: error: 'num' was not declared in this scope; did you mean 'enum'?
    7 | if ( num>0) cout <<"1"<<endl;
      |      ^~~
      |      enum
Language: C++

#include<bits/stdc++.h>
using namespace std;
signed main()
{
	ios::sync_with_stdio(0);
    cin.tie(0);
	int n,m;
	cin>>n>>m；
	cout<<(n-1)*(m-1);
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:17: error: 'm\U0000ff1b' was not declared in this scope
    8 |         cin>>n>>m；
      |                 ^~~
Language: Java

mport java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		sc.close();

		System.out.println((a - 1) * (b - 1));
	}
}


Compiler output:
Main.java:1: error: class, interface, enum, or record expected
mport java.util.Scanner;
^
1 error
Language: C++

#include <bits/stdc++.h>
#define F first
#define S second
using namespace std;
using ll = long long;
typedef pair<int, int> P;
ll Mod = 1000000007;
int main() {
  cin >> A >> B;
  cout << (A*B) - A - B + 1 << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:10: error: 'A' was not declared in this scope
    9 |   cin >> A >> B;
      |          ^
a.cc:9:15: error: 'B' was not declared in this scope
    9 |   cin >> A >> B;
      |               ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int a,b; cin >> a >> b;
  a--;b--:
  cout << a * b ;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:10: error: expected ';' before ':' token
    6 |   a--;b--:
      |          ^
      |          ;
Language: C++

#include<bits\stdc++.h>
using namespace std;
int main()
{
    int a,b,c;
    cin>>a>>b;
    c=a*b-(a+b)+1;
    cout<<c<<endl;
    return 0;
}

Compiler output:
a.cc:1:9: fatal error: bits\stdc++.h: No such file or directory
    1 | #include<bits\stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<bits\stdc++.h>
using namespace std;
int main()
{
    long long n,m;
    cin>>n>>m;
    cout<<(n-1)*(m-1)<<endl;
    cout<<"In this case, the area is "<< (n-1)*(m-1) <<" square yard."<<endl;

}


Compiler output:
a.cc:1:9: fatal error: bits\stdc++.h: No such file or directory
    1 | #include<bits\stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;

int a, b, luas;

int man () {
cin >> a >> b;
luas=a*b-a-b;
cout << luas << endl;

}




Compiler output:
a.cc: In function 'int man()':
a.cc:11:1: warning: no return statement in function returning non-void [-Wreturn-type]
   11 | }
      | ^
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: Java

import java.util.*;
public class Main {
    public static void main (String[] args) {
      Scanner sc = new Scanner(System.in);
      int H = sc.nextInt(), W = nextInt();
      int ans = (H-1)*(W-1);
      
      System.out.println(ans);
    }
}

Compiler output:
Main.java:5: error: cannot find symbol
      int H = sc.nextInt(), W = nextInt();
                                ^
  symbol:   method nextInt()
  location: class Main
1 error
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair<int,int>;

int main() {
	int A, B;
	cin >> A >> B;
	int ans = (A-1)(B-1);
	cout << ans << endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:24: error: expression cannot be used as a function
   10 |         int ans = (A-1)(B-1);
      |                   ~~~~~^~~~~
Language: C++

#include <bits/stdc++.h>

using namespace std;
#define ll long long 
int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	int t;
	cin >> t;
	cout << a*b-a+b-1;
	return 0;	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:17: error: 'a' was not declared in this scope
   10 |         cout << a*b-a+b-1;
      |                 ^
a.cc:10:19: error: 'b' was not declared in this scope
   10 |         cout << a*b-a+b-1;
      |                   ^
Language: C++

#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); i++)
using namespace std;
using P = pair<int, int>;
typedef long long ll;

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include <iostream>
using namespace std;

int main(){
  int n;
  cin >> n;
  //沿いsン巣調べ
  int ans = 0;
  for(int N =1; N<=n; N++){
  int count =1;
  while(N%2==0){
    N /=2;
    count++;
  }
  while(N%3==0){
    N /=2;
    count++;
  }
  while(N%5==0){
    N /=2;
    count++;
  }
  while(N%7==0){
    N /=2;
    count++;
  }
  while(N%11==0){
    N /=2;
    count++;
  }
  while(N%13==0){
    N /=2;
    count++;
  }
    if(count==8) ans++;
  }
  cout << ans << endl;
  return 0;
}#include <iostream>
using namespace std;

int main(){
  int n;
  cin >> n;
  //沿いsン巣調べ
  int ans = 0;
  for(int N =1; N<=n; N++){
  int count =1;
  while(N%2==0){
    N /=2;
    count++;
  }
  while(N%3==0){
    N /=2;
    count++;
  }
  while(N%5==0){
    N /=2;
    count++;
  }
  while(N%7==0){
    N /=2;
    count++;
  }
  while(N%11==0){
    N /=2;
    count++;
  }
  while(N%13==0){
    N /=2;
    count++;
  }
    if(count==8) ans++;
  }
  cout << ans << endl;
  return 0;
}

Compiler output:
a.cc:39:2: error: stray '#' in program
   39 | }#include <iostream>
      |  ^
a.cc:39:3: error: 'include' does not name a type
   39 | }#include <iostream>
      |   ^~~~~~~
a.cc:42:5: error: redefinition of 'int main()'
   42 | int main(){
      |     ^~~~
a.cc:4:5: note: 'int main()' previously defined here
    4 | int main(){
      |     ^~~~
Language: Java

import java.util.*;

public class Main{
  	
  	piblic static void main(String[] args){
      
      	Scanner sc = new Scanner(System.in);
      	int a = sc.nextInt();
      	int b = sc.nextInt();
      
      	System.out.println((a-1)*(b-1));
    }
}

Compiler output:
Main.java:5: error: <identifier> expected
  	piblic static void main(String[] args){
  	      ^
1 error
Language: C

#include<stdio.h>
int main(void){
  int a,b;
  scasnf("%d%d",&a,&b);
  int ans;
  ans=(a-1)*(b-1);
  printf("%d",ans);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:4:3: error: implicit declaration of function 'scasnf'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    4 |   scasnf("%d%d",&a,&b);
      |   ^~~~~~
      |   scanf
Language: C++

#include <bits/stdc++.h>

int main() {
  
  int A,B; cin >> A >> B ;
  
  cout << (A-1)*(B-1) << endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:12: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   int A,B; cin >> A >> B ;
      |            ^~~
      |            std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |   cout << (A-1)*(B-1) << endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:7:26: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    7 |   cout << (A-1)*(B-1) << endl;
      |                          ^~~~
      |                          std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

int main() {
  
  int A,B; cin >> A >> B ;
  
  cout << (A-1)*(B-1) << endl;
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:12: error: 'cin' was not declared in this scope
    3 |   int A,B; cin >> A >> B ;
      |            ^~~
a.cc:5:3: error: 'cout' was not declared in this scope
    5 |   cout << (A-1)*(B-1) << endl;
      |   ^~~~
a.cc:5:26: error: 'endl' was not declared in this scope
    5 |   cout << (A-1)*(B-1) << endl;
      |                          ^~~~
Language: C++

##include<bits/stdc++.h>
using namespace std;
int main()
{
int A;
int B;
cout<<A-1*B-1;
}


Compiler output:
a.cc:1:1: error: stray '##' in program
    1 | ##include<bits/stdc++.h>
      | ^~
a.cc:1:3: error: 'include' does not name a type
    1 | ##include<bits/stdc++.h>
      |   ^~~~~~~
a.cc: In function 'int main()':
a.cc:7:1: error: 'cout' was not declared in this scope
    7 | cout<<A-1*B-1;
      | ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
  int A,B;
  cin>>A,B;
  cout<<(A-1)(B-1)<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:14: error: expression cannot be used as a function
    7 |   cout<<(A-1)(B-1)<<endl;
      |         ~~~~~^~~~~
Language: Java

import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    	int vertical = sc.next();
    	int side = sc.next();
    	System.out.println((vertical - 1) * (side - 1));
  }
}

Compiler output:
Main.java:6: error: incompatible types: String cannot be converted to int
    	int vertical = sc.next();
    	                      ^
Main.java:7: error: incompatible types: String cannot be converted to int
    	int side = sc.next();
    	                  ^
2 errors
Language: Java

import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System in);
    	int vertical = sc.next();
    	int side = sc.next();
    	System.out.println((vertical - 1) * (side - 1));
  }
}

Compiler output:
Main.java:5: error: ')' or ',' expected
    Scanner sc = new Scanner(System in);
                                   ^
Main.java:5: error: not a statement
    Scanner sc = new Scanner(System in);
                                    ^
Main.java:5: error: ';' expected
    Scanner sc = new Scanner(System in);
                                      ^
3 errors
Language: C

#include<stdio.h>
int main(){
int a,b;
scanf("%d %d",&a,&b);
printf("%d",(a-1)*(b-1))
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:25: error: expected ';' before 'return'
    5 | printf("%d",(a-1)*(b-1))
      |                         ^
      |                         ;
    6 | return 0;
      | ~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int A,B,;
  cin>>A>>B;
  cout<<(A-1)*(B-1)<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:11: error: expected unqualified-id before ';' token
    5 |   int A,B,;
      |           ^
Language: C++

#include <algorithm>
#include <cmath>
#include <iostream>
#include <string>
#include <vector>
#include <numeric>
#include <cstdio>
typedef long long ll;
#define all(x) (x).begin(), (x).end()  // sortなどの引数を省略
#define rep(i, n) for (ll i = 0; i < (ll)(n); i++)
#define max3(x, y, z) max(x, max(y, z))

#ifdef _MSC_FULL_VER  //デバッグ出力
#define dout cout
#define debug() if (true)
#define check(x) std::cout << "★" << #x << "の値:" << (x) << endl
#define pass(x) std::cout << "☆" << x << endl
#else
#define dout \
  if (false) cout
#define debug() if (false)
#define check(x) \
  if (false) cout << "★" << #x << "の値:" << (x) << endl
#define pass(x) \
  if (false) cout << "☆" << x << endl
#endif
using namespace std;
int main() {
  int a,b;
  cin >> a >> b;
  cout << (a-1)*_(b-1);
}
/*
//よく使うやつ
int N;
cin >> N;
vector<int> list(N);
for (int i = 0; i < N; i++) {
cin >> list[i];
}
// for文
for (int i = 0; i < N; i++) {
}
//配列
vector<int> list;
list.at(i)
vector<vector<int>> list(10, vector<int>(10));
sort(all(list));
sort(all(list), greater<int>());
//配列の内容表示
dout << "====listの内容====\n";
for (int i = 0; i < N; i++) dout << list[i] << endl;
dout << "====ここまで====\n";
*/


Compiler output:
a.cc: In function 'int main()':
a.cc:31:17: error: '_' was not declared in this scope
   31 |   cout << (a-1)*_(b-1);
      |                 ^
Language: C

#include <stdio.h>
#include <stdlib.h>
 
int main(){
  int A,B;
  scanf("%d %d",&A,&B);
  printf("%d\n",(A-1)*(B-1);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:28: error: expected ')' before ';' token
    7 |   printf("%d\n",(A-1)*(B-1);
      |         ~                  ^
      |                            )
main.c:8:12: error: expected ';' before '}' token
    8 |   return 0;
      |            ^
      |            ;
    9 | }
      | ~
Language: C

#include <stdio.h>
#include <stdlib.h>
 
int main(){
  int A,B;
  scanf("%d %d",&A,&B);
  printf("%d\n",(A-1.0)*(B-1.0);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:32: error: expected ')' before ';' token
    7 |   printf("%d\n",(A-1.0)*(B-1.0);
      |         ~                      ^
      |                                )
main.c:8:12: error: expected ';' before '}' token
    8 |   return 0;
      |            ^
      |            ;
    9 | }
      | ~
Language: C++

#include <iostream>
int main(){
  int A, B;
  std::cin >> A >> B;
  std::cout << (A - 1) * (B - 1) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:37: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    5 |   std::cout << (A - 1) * (B - 1) << endl;
      |                                     ^~~~
      |                                     std::endl
In file included from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define IO(i, o) freopen(i, "r", stdin), freopen(o, "w", stdout)

using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> indexed_set;
mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count());

int main(){
	//IO("input.txt", "output.txt");
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout << a * b - a - b + 1 << "\n";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:17: error: 'a' was not declared in this scope
   15 |         cout << a * b - a - b + 1 << "\n";
      |                 ^
a.cc:15:21: error: 'b' was not declared in this scope
   15 |         cout << a * b - a - b + 1 << "\n";
      |                     ^
Language: C++

#include <iostream>

int main(){
  int a, b;
  cin >> a >> b;
  
  cout << (a - 1) * (b - 1) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   cin >> a >> b;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |   cout << (a - 1) * (b - 1) << endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:7:32: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    7 |   cout << (a - 1) * (b - 1) << endl;
      |                                ^~~~
      |                                std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C

#include <stdio.h>

int main()
{
  int a,b;
  scanf("%d %d %d",&a,&b,&c);
  printf("%d",(a-1)*(b-1));
}

Compiler output:
main.c: In function 'main':
main.c:6:27: error: 'c' undeclared (first use in this function)
    6 |   scanf("%d %d %d",&a,&b,&c);
      |                           ^
main.c:6:27: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
int a,b;
cin >> a >> b;
cout << (a-1)(b-1) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:14: error: expression cannot be used as a function
    7 | cout << (a-1)(b-1) << endl;
      |         ~~~~~^~~~~
Language: C++

#include<iostream>
int main(){
  	int a,b;
  	cin >> a >> b;
  
  	cout >> a*b-(a+b)+1 << endl;
 
	return 0;  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |         cin >> a >> b;
      |         ^~~
      |         std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:6:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    6 |         cout >> a*b-(a+b)+1 << endl;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:6:32: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    6 |         cout >> a*b-(a+b)+1 << endl;
      |                                ^~~~
      |                                std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  cin >> a >> b;
  cout<<(a-1)*(b-1)<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:4:10: error: 'a' was not declared in this scope
    4 |   cin >> a >> b;
      |          ^
a.cc:4:15: error: 'b' was not declared in this scope
    4 |   cin >> a >> b;
      |               ^
Language: C++

#include<iostream>
using namespace std ;

int amin(){
  int a,b ;
  cin >> a >> b ;
  cout << a*b-(a+b-1) << endl ;
}

Compiler output:
a.cc: In function 'int amin()':
a.cc:8:1: warning: no return statement in function returning non-void [-Wreturn-type]
    8 | }
      | ^
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include<bits/stdc++.h>
using namespace std;

int main(){
	ll a,b;
  	cin >> a >> b;
  	cout << (a-1)*(b-1);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:9: error: 'll' was not declared in this scope
    5 |         ll a,b;
      |         ^~
a.cc:6:16: error: 'a' was not declared in this scope
    6 |         cin >> a >> b;
      |                ^
a.cc:6:21: error: 'b' was not declared in this scope
    6 |         cin >> a >> b;
      |                     ^
Language: C++

#include<iostream>
using namespace std;
void garden(int &x,int &y)
{
    x*y-(x+y)+1;
}
int main()
{
	cin>>x>>y;
	garden(x,y);
    
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:14: error: 'x' was not declared in this scope
    9 |         cin>>x>>y;
      |              ^
a.cc:9:17: error: 'y' was not declared in this scope
    9 |         cin>>x>>y;
      |                 ^
Language: C++

#include <bits/stdc++.h>
using longlong=long long;

int main(){
    std::cin.tie(nullptr);std::cin.sync_with_stdio(false);
    int a, b; std::cin >> a >> b;
    std::cout << (a-1)*(b-1s) << std::endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:27: error: unable to find numeric literal operator 'operator""s'
    7 |     std::cout << (a-1)*(b-1s) << std::endl;
      |                           ^~
Language: C

#include<bits/stdc++.h>

int main()
{
 int A,B,area;
scanf("%d",&A);
scanf("%d",&B);
area=(A*B)-(A+B)+1;
printf("%d",area);
return 0;




}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
#include <math.h>
#include <cmath>
 
using namespace std;
using std::cout;
using ll =long long;
bool is_int_lround(double x){
  return std::lround(x)==x;
}
int ketasuu(int x){
  int n=0;
  while(x>0){
    x /=10 ;
    n ++;
  }
  return n;
}
ll gcd11(ll x, ll y){
  long long a= max(x,y), b=min(x,y), c=a%b;
  while( c!=0){
    a =b;
    b =c;
    c = a%b;
  }
  return b;
}

int ab(int x, int y){
  if(x>=y){
    return x-y;
  }
  else if(y>x){
    return y-x;
  }
}
int main(){
  int N,K;
  cin>>N>>K;
  cout<< A*B -A-B+1<<endl;
 

}


Compiler output:
a.cc: In function 'int main()':
a.cc:40:10: error: 'A' was not declared in this scope
   40 |   cout<< A*B -A-B+1<<endl;
      |          ^
a.cc:40:12: error: 'B' was not declared in this scope
   40 |   cout<< A*B -A-B+1<<endl;
      |            ^
a.cc: In function 'int ab(int, int)':
a.cc:36:1: warning: control reaches end of non-void function [-Wreturn-type]
   36 | }
      | ^
Language: C++

//C
//#ifndef _GLIBCXX_NO_ASSERT
#include <cassert>
#include <cctype>
#include <cerrno>
#include <cfloat>
#include <ciso646>
#include <climits>
#include <clocale>
#include <cmath>
#include <csetjmp>
#include <csignal>
#include <cstdarg>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>


#include <ccomplex>
#include <cfenv>
#include <cinttypes>
#include <cstdalign>
#include <cstdbool>
#include <cstdint>
#include <ctgmath>
#include <cwchar>
#include <cwctype>

// C++
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>

#include <array>
#include <atomic>
#include <chrono>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>

//Hang in there!

using namespace std;


int main() {
	int A, B;
	cin >> A >> B;
	cout << (A - 1) * (B - 1) << endl;:
}



Compiler output:
a.cc: In function 'int main()':
a.cc:93:43: error: expected primary-expression before ':' token
   93 |         cout << (A - 1) * (B - 1) << endl;:
      |                                           ^
Language: C

#include 
#include

int main()
{
int c,d;
while(~scanf("%d %d",&c,&d))
{
printf("%d\n",c*d-c-d+1);
}
}

Compiler output:
main.c:1:10: error: #include expects "FILENAME" or <FILENAME>
    1 | #include
      |          ^
main.c:2:9: error: #include expects "FILENAME" or <FILENAME>
    2 | #include
      |         ^
main.c: In function 'main':
main.c:7:8: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    7 | while(~scanf("%d %d",&c,&d))
      |        ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #include
main.c:7:8: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    7 | while(~scanf("%d %d",&c,&d))
      |        ^~~~~
main.c:7:8: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:9:1: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    9 | printf("%d\n",c*d-c-d+1);
      | ^~~~~~
main.c:9:1: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:1: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:9:1: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

#include<bits/stdc++.h>
using namespace std;
int main()
{
int a,b,c;
cin>>a>>b;
--a;
--b;
c=(a*b);
cout<<c;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include <bits/stdc++.h>
using namespace std;

int main(){
	int a,b;
	cin>>a>>b;
    cout<<a*b -(a+b-1)<<endl;

return 0;
}


Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#include<bits/stdc++.h>
namespace std;

int main(){
	int a,b;
	cin>>a>>b;
    cout<<a*b -(a+b-1)<<endl;

return 0;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Aの値を入力");
            int A = int.Parse(Console.ReadLine());
            Console.WriteLine("Bの値を入力");
            int B = int.Parse(Console.ReadLine());
            Console.WriteLine((A - 1) * (B - 1));

        }
    }
}


Compiler output:
a.cc:5:26: error: 'string' has not been declared
    5 |         static void Main(string[] args)
      |                          ^~~~~~
a.cc:5:35: error: expected ',' or '...' before 'args'
    5 |         static void Main(string[] args)
      |                                   ^~~~
a.cc:14:6: error: expected ';' after class definition
   14 |     }
      |      ^
      |      ;
a.cc: In static member function 'static void ConsoleApp2::Program::Main(int*)':
a.cc:7:13: error: 'Console' was not declared in this scope
    7 |             Console.WriteLine("Aの値を入力");
      |             ^~~~~~~
a.cc:8:21: error: expected primary-expression before 'int'
    8 |             int A = int.Parse(Console.ReadLine());
      |                     ^~~
a.cc:10:21: error: expected primary-expression before 'int'
   10 |             int B = int.Parse(Console.ReadLine());
      |                     ^~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for(int i = 0; i < n; i++)

int main(void){
    cin >> a >> b;
    cout << (a-1) * (b-1) << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: 'a' was not declared in this scope
    7 |     cin >> a >> b;
      |            ^
a.cc:7:17: error: 'b' was not declared in this scope
    7 |     cin >> a >> b;
      |                 ^
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main(){
	int a,b;
	cin >> c >> b ;
	cout << (c*b) -(c+b -1);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:16: error: 'c' was not declared in this scope
    6 |         cin >> c >> b ;
      |                ^
Language: C++

include <bits/stdc++.h>
using namespace std;
int w,u,TOD;
int main () {
cin  >> w >> u;
TOD= w*u-w*1-u*1+1;
cout << TOD << endl;
}

Compiler output:
a.cc:1:1: error: 'include' does not name a type
    1 | include <bits/stdc++.h>
      | ^~~~~~~
a.cc: In function 'int main()':
a.cc:5:1: error: 'cin' was not declared in this scope
    5 | cin  >> w >> u;
      | ^~~
a.cc:7:1: error: 'cout' was not declared in this scope
    7 | cout << TOD << endl;
      | ^~~~
a.cc:7:16: error: 'endl' was not declared in this scope
    7 | cout << TOD << endl;
      |                ^~~~
Language: C++

#include <iostreame>
using namespace std;

int main() {
  int a,b;
  cin >> a >>b;
  cout << a * b - a - b + 1 endl; 
}

Compiler output:
a.cc:1:10: fatal error: iostreame: No such file or directory
    1 | #include <iostreame>
      |          ^~~~~~~~~~~
compilation terminated.
Language: C++

int main(){
  int s,t;
  scanf("%d",&s);
  scanf("%d",&t);
  return (s-1)*(t-1);
}



Compiler output:
a.cc: In function 'int main()':
a.cc:3:3: error: 'scanf' was not declared in this scope
    3 |   scanf("%d",&s);
      |   ^~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a,b;
  cin >> a >>b ;
  
 
    cout << a*b+1-(a+b) << endl;
}
}
  




Compiler output:
a.cc:11:1: error: expected declaration before '}' token
   11 | }
      | ^
Language: C

#include<stdio.h>

int main(void){
    int a, b;


    scanf("%d %d",&a, &b);
    
    printf("%d\n",a*B-(a+b-1));

}

Compiler output:
main.c: In function 'main':
main.c:9:21: error: 'B' undeclared (first use in this function)
    9 |     printf("%d\n",a*B-(a+b-1));
      |                     ^
main.c:9:21: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int main(void){
	int a[2];
	int yard = 0;

	scanf("%d", &a[0]);
	scanf("%d", &a[1]);

	yard = a[0]*a[1]-(a[0]+a[1])+1;

	printf("%d\n", yard);

	return 0;
}
#include <stdio.h>

int main(void){
	int a[2];
	int yard = 0;

	scanf("%d", &a[0]);
	scanf("%d", &a[1]);

	yard = a[0]*a[1]-(a[0]+a[1])+1;

	printf("%d\n", yard);

	return 0;
}


Compiler output:
main.c:18:5: error: redefinition of 'main'
   18 | int main(void){
      |     ^~~~
main.c:3:5: note: previous definition of 'main' with type 'int(void)'
    3 | int main(void){
      |     ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  itn a,b;
  cin>>a>>b;
  cout<<(a-1)*(b-1)<<"\n";
}


Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'itn' was not declared in this scope; did you mean 'int'?
    4 |   itn a,b;
      |   ^~~
      |   int
a.cc:5:8: error: 'a' was not declared in this scope
    5 |   cin>>a>>b;
      |        ^
a.cc:5:11: error: 'b' was not declared in this scope
    5 |   cin>>a>>b;
      |           ^
Language: C++

#include<bits/stdc++.h>

int main(){
  int a,b;
  cin >> a >> b;
  a--;
  b--;
  cout << a * b << endl;
return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   cin >> a >> b;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:8:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |   cout << a * b << endl;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:8:20: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    8 |   cout << a * b << endl;
      |                    ^~~~
      |                    std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include<stdio.h>
int main(){
  int a,b;
  scanf("%d %d",&a,&b);
  printf("%d"a*b-a-b+1);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:10: error: unable to find string literal operator 'operator""a' with 'const char [3]', 'long unsigned int' arguments
    5 |   printf("%d"a*b-a-b+1);
      |          ^~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a, b;
  cin >> a >> b;

  cout << A * B - (A + B - 1) <<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:11: error: 'A' was not declared in this scope
    8 |   cout << A * B - (A + B - 1) <<endl;
      |           ^
a.cc:8:15: error: 'B' was not declared in this scope
    8 |   cout << A * B - (A + B - 1) <<endl;
      |               ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main() {
int a,b,l;
cin >> a >> b;
l=a*b - a -b +1
cout << l << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:16: error: expected ';' before 'cout'
    6 | l=a*b - a -b +1
      |                ^
      |                ;
    7 | cout << l << endl;
      | ~~~~
Language: C++

#include<iostream>
using namespace std;
#define int アハ
#define if アハハ
#define main アッハッハ
#define cin ブワハハ
#define cout ゲラゲラ
#define void 笑


アハ アッハッハ(笑){
    アハ オホホ,イヒヒ;
    ブワハハ>>オホホ>>イヒヒ;
    ゲラゲラ<<(オホホ-1)*(イヒヒ-1);
}


Compiler output:
a.cc:11:1: error: '\U000030a2\U000030cf' does not name a type
   11 | アハ アッハッハ(笑){
      | ^~~~
Language: C++

#include<iostream>
using namespace std;
#define int ウホ
#define if ウホホ
#define main ウッホー
#define cin>> ホホホホ
#define cout<< ウウウウ



ウホ ウッホー(){
    ウホ ウ,ホ;
    ホホホホウ;
    ホホホホホ;
    ウウウウ(ウ-1)*(ホ-1);
}


Compiler output:
a.cc:6:9: warning: ISO C++11 requires whitespace after the macro name
    6 | #define cin>> ホホホホ
      |         ^~~
a.cc:7:9: warning: ISO C++11 requires whitespace after the macro name
    7 | #define cout<< ウウウウ
      |         ^~~~
a.cc:11:1: error: '\U000030a6\U000030db' does not name a type
   11 | ウホ ウッホー(){
      | ^~~~
Language: C++

#include<iostream>
using namespace std;
#define int ウホ
#define if ウホホ
#define main ウッホー
#define cin>> ホホホホ
#define cout<<ウウウウ



ウホ ウッホー(){
    ウホ ウ,ホ;
    ホホホホウ;
    ホホホホホ;
    ウウウウ(ウ-1)*(ホ-1);
}


Compiler output:
a.cc:6:9: warning: ISO C++11 requires whitespace after the macro name
    6 | #define cin>> ホホホホ
      |         ^~~
a.cc:7:9: warning: ISO C++11 requires whitespace after the macro name
    7 | #define cout<<ウウウウ
      |         ^~~~
a.cc:11:1: error: '\U000030a6\U000030db' does not name a type
   11 | ウホ ウッホー(){
      | ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define int ウホ
#define if ウホホ
#define main ウッホー
#define cin>> ホホホホ
#define cout<<ウウウウ



ウホ ウッホー(){
    ウホ ウ,ホ;
    ホホホホウ;
    ホホホホホ;
    ウウウウ(ウ-1)*(ホ-1);
}


Compiler output:
a.cc:6:9: warning: ISO C++11 requires whitespace after the macro name
    6 | #define cin>> ホホホホ
      |         ^~~
a.cc:7:9: warning: ISO C++11 requires whitespace after the macro name
    7 | #define cout<<ウウウウ
      |         ^~~~
a.cc:11:1: error: '\U000030a6\U000030db' does not name a type
   11 | ウホ ウッホー(){
      | ^~~~
Language: C++

#include<iostream>
int main(){
  int a,b;cin >> a >> b;
  cout << (a-1)*(b-1);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:11: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    3 |   int a,b;cin >> a >> b;
      |           ^~~
      |           std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:4:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    4 |   cout << (a-1)*(b-1);
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
    int a, b;
    cin >> a >> b;
    cout << a*b=a=b+1 << endl;
    }


Compiler output:
a.cc: In function 'int main()':
a.cc:7:23: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<<'
    7 |     cout << a*b=a=b+1 << endl;
      |                   ~~~~^~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;

int main() {
  int a, b;
  cinn >> a >> b;
  cout << (a - 1) * (b - 1) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cinn' was not declared in this scope
    6 |   cinn >> a >> b;
      |   ^~~~
Language: C++

#include<iostream>
#include<math.h>
#include <algorithm>
#include<float.h>
#include <limits>
#include <vector> 
#include <numeric>
#include <string.h>

#define rep(i,a,n) for(ll int (i) = (a);(i) < (n);(i)++)
#define urep(i,a,n) for(ll int (i) = (a);(i) > (n);(i)--)
#define MOD 1000000007
#define ll long long

using namespace::std;

int jo(ll int jxo, ll int jyo){
	ll int jhogeo = 1;
	rep(jinto,0,jyo) jhogeo=jhogeo*jxo;
	return jhogeo;
}
char tobig(char toxbig){
  return (toxbig-0x20);
}
char tolow(char toxlow){
  return (toxlow+0x20);
}
  


int main(){
  int a,b;
  cin>>a>>b;
  cout<<(a-1)*(b-1)
}
// int *p = new int[N];

//  vector<int> 変数名(要素数);
//  sort(変数名.begin(),変数名.end());//昇順ソート

// vector<vector<int>> 変数名(左の個数, vector<int>(右の個数));

//


Compiler output:
a.cc: In function 'int main()':
a.cc:34:20: error: expected ';' before '}' token
   34 |   cout<<(a-1)*(b-1)
      |                    ^
      |                    ;
   35 | }
      | ~
Language: C++

#include<bits/stdc++.h>
usong namespace std;
int main(){
  int a,b; cin >> a >> b;
  cout << (a-1) * (b-1);
  return 0; 
}

Compiler output:
a.cc:2:1: error: 'usong' does not name a type; did you mean 'ulong'?
    2 | usong namespace std;
      | ^~~~~
      | ulong
a.cc: In function 'int main()':
a.cc:4:12: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |   int a,b; cin >> a >> b;
      |            ^~~
      |            std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:5:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    5 |   cout << (a-1) * (b-1);
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C

#include <stdio.h>
int main(){
  int a,b;
  scanf("%d,%d",&a,&b);
  a=(a-1)(b-1);
  printf("%d",a);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:7: error: called object is not a function or function pointer
    5 |   a=(a-1)(b-1);
      |     ~~^~~