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

#include <algorithm>
#include <iostream>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <list>
#include <cmath>
#include <stack>
#include <string>
#include <cstring>
#include <numeric>
#include <iomanip>
#include <fstream>
using namespace std;
int main(){
	int n;
	int d[100][2];
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>d[i][0]<<c[i][1];
	}
	for(int i=0;i<n-2;i++){
		if(d[i][0]==d[i][1]&&d[i+1][0]==d[i+1][1]&&d[i+2][0]==d[i+2][1]){
			cout<<"Yes"<<endl;
			return 0;
		}
	}
	cout<<"No"<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:31: error: 'c' was not declared in this scope
   21 |                 cin>>d[i][0]<<c[i][1];
      |                               ^
Language: C++

#include <bits/stdc++.h>

int main( {
    using namespace std;
    unsigned long N;
    cin >> N;
    unsigned long cnt{0};
    for(unsigned long i{0}, d1, d2; i < N; ++i){
        cin >> d1 >> d2;
        if(d1 == d2){
            if(++cnt = 3)return 0 & puts("Yes");
        }else cnt = 0;
    }
    puts("No");
    return 0;
}


Compiler output:
a.cc:3:5: error: cannot declare '::main' to be a global variable
    3 | int main( {
      |     ^~~~
a.cc:4:5: error: expected primary-expression before 'using'
    4 |     using namespace std;
      |     ^~~~~
a.cc:4:5: error: expected '}' before 'using'
a.cc:3:11: note: to match this '{'
    3 | int main( {
      |           ^
a.cc:3:12: error: expected ')' before 'using'
    3 | int main( {
      |         ~  ^
      |            )
    4 |     using namespace std;
      |     ~~~~~   
a.cc:6:5: error: 'cin' does not name a type
    6 |     cin >> N;
      |     ^~~
a.cc:8:5: error: expected unqualified-id before 'for'
    8 |     for(unsigned long i{0}, d1, d2; i < N; ++i){
      |     ^~~
a.cc:8:27: error: expected unqualified-id before ',' token
    8 |     for(unsigned long i{0}, d1, d2; i < N; ++i){
      |                           ^
a.cc:8:31: error: expected constructor, destructor, or type conversion before ',' token
    8 |     for(unsigned long i{0}, d1, d2; i < N; ++i){
      |                               ^
a.cc:8:35: error: expected constructor, destructor, or type conversion before ';' token
    8 |     for(unsigned long i{0}, d1, d2; i < N; ++i){
      |                                   ^
a.cc:8:37: error: 'i' does not name a type
    8 |     for(unsigned long i{0}, d1, d2; i < N; ++i){
      |                                     ^
a.cc:8:44: error: expected unqualified-id before '++' token
    8 |     for(unsigned long i{0}, d1, d2; i < N; ++i){
      |                                            ^~
a.cc:14:9: error: expected constructor, destructor, or type conversion before '(' token
   14 |     puts("No");
      |         ^
a.cc:15:5: error: expected unqualified-id before 'return'
   15 |     return 0;
      |     ^~~~~~
a.cc:16:1: error: expected declaration before '}' token
   16 | }
      | ^
Language: C++

#include <bits/stdc++.h>

int main( {
    using namespace std;
    unsigned long N;
    cin >> N;
    unsigned long cnt{0};
    for(unsigned long i{0}, d1, d2; i < N; ++i){
        cin >> d1 >> d2;
        if(d1 == d2)if(++cnt = 3)return 0 & puts("Yes");
    }
    puts("No");
    return 0;
}


Compiler output:
a.cc:3:5: error: cannot declare '::main' to be a global variable
    3 | int main( {
      |     ^~~~
a.cc:4:5: error: expected primary-expression before 'using'
    4 |     using namespace std;
      |     ^~~~~
a.cc:4:5: error: expected '}' before 'using'
a.cc:3:11: note: to match this '{'
    3 | int main( {
      |           ^
a.cc:3:12: error: expected ')' before 'using'
    3 | int main( {
      |         ~  ^
      |            )
    4 |     using namespace std;
      |     ~~~~~   
a.cc:6:5: error: 'cin' does not name a type
    6 |     cin >> N;
      |     ^~~
a.cc:8:5: error: expected unqualified-id before 'for'
    8 |     for(unsigned long i{0}, d1, d2; i < N; ++i){
      |     ^~~
a.cc:8:27: error: expected unqualified-id before ',' token
    8 |     for(unsigned long i{0}, d1, d2; i < N; ++i){
      |                           ^
a.cc:8:31: error: expected constructor, destructor, or type conversion before ',' token
    8 |     for(unsigned long i{0}, d1, d2; i < N; ++i){
      |                               ^
a.cc:8:35: error: expected constructor, destructor, or type conversion before ';' token
    8 |     for(unsigned long i{0}, d1, d2; i < N; ++i){
      |                                   ^
a.cc:8:37: error: 'i' does not name a type
    8 |     for(unsigned long i{0}, d1, d2; i < N; ++i){
      |                                     ^
a.cc:8:44: error: expected unqualified-id before '++' token
    8 |     for(unsigned long i{0}, d1, d2; i < N; ++i){
      |                                            ^~
a.cc:12:9: error: expected constructor, destructor, or type conversion before '(' token
   12 |     puts("No");
      |         ^
a.cc:13:5: error: expected unqualified-id before 'return'
   13 |     return 0;
      |     ^~~~~~
a.cc:14:1: error: expected declaration before '}' token
   14 | }
      | ^
Language: C++

#include<bits/stdc++.h>
#include<cstring>
#include<cmath>
// #include<queue>
#include<vector>
#include<utility>
using namespace std;
int inf=1e9;
//vector<long long int>adj[10000];

int main()
{
	int n;
	cin>>n;
	int ans=0;
	for(int i=1;i<=n-1;i++)
	{
		//int a=i;
		//int b=(n-1)/i;
		//int c=n-(n-1)*b;
		ans+=b;
		// if(a>0 && b>0 && c>0)
		// {
		// 	if(a==b && b==c)ans+=1;
		// 	else if((a==b && b!=c) || (a==c && a!=b) || (b==c && a!=b))ans+=3;
		// 	else ans+=6;
		// }
		//cout<<a<<" "<<b<<" "<<c<<" "<<ans<<endl;
	}
	cout<<ans<<endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:22: error: 'b' was not declared in this scope
   21 |                 ans+=b;
      |                      ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  int n;
  cin >> n;
  int ans = 0;
  for(int i = 1; i < n; ++i)
    ans += (n - 1)/ i;
  cout << ans;
    

Compiler output:
a.cc: In function 'int main()':
a.cc:10:15: error: expected '}' at end of input
   10 |   cout << ans;
      |               ^
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
 
int main() {
  int n;
	cin >> n;
	for(int a = 1; a <= n-1; a++){
		int last = n / a;
		if(n % a == 0){
			last--;
		}
		if(!last){
			continue;
		}
		ans += (last-1+1);
	}
	
	cout << ans << endl;
}

signed main() {
int t = 1;
// cin >> t;    
	while(t--)
    solve();

    return 0;
}


  

Compiler output:
a.cc: In function 'int main()':
a.cc:17:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   17 |                 ans += (last-1+1);
      |                 ^~~
      |                 abs
a.cc:20:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   20 |         cout << ans << endl;
      |                 ^~~
      |                 abs
a.cc: At global scope:
a.cc:23:8: error: redefinition of 'int main()'
   23 | signed main() {
      |        ^~~~
a.cc:6:5: note: 'int main()' previously defined here
    6 | int main() {
      |     ^~~~
a.cc: In function 'int main()':
a.cc:27:5: error: 'solve' was not declared in this scope
   27 |     solve();
      |     ^~~~~
Language: C++

#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef string str;
typedef vector<ll> vel;
typedef vector<str> ves;
#define REP(i, a, b) for (ll i = (ll)(a); i < (ll)(b); i++)
#define rep(i, b) REP(i, 0, b)
const ll mod = 1000000007;
const double pi = 3.14159265358979;

ll expo(ll a, ll b){
    ll ex = 1;
    rep(i, b){
        ex *= a;
    }
    return ex;
}

ll fact(ll a){
    ll fc = 1;
    REP(i, 1, a+1){
        fc *= i;
    }
    return fc;
}

int main() {
    ll n;
    cin >> n;
    ll cnt = 0;
    REP(a, 1, n) {
        cnt += (n-1)/a
    }
    cout << cnt << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:34:23: error: expected ';' before '}' token
   34 |         cnt += (n-1)/a
      |                       ^
      |                       ;
   35 |     }
      |     ~
Language: C++

void c(){
  ll N; cin >> N;
  ll ans = 0;
  for(auto A=1;A<N;A++)
    for(auto B=1;A*B<N;B++){
        ans++;
    }

    cout << ans << endl;
};


Compiler output:
a.cc: In function 'void c()':
a.cc:2:3: error: 'll' was not declared in this scope
    2 |   ll N; cin >> N;
      |   ^~
a.cc:2:9: error: 'cin' was not declared in this scope
    2 |   ll N; cin >> N;
      |         ^~~
a.cc:2:16: error: 'N' was not declared in this scope
    2 |   ll N; cin >> N;
      |                ^
a.cc:3:5: error: expected ';' before 'ans'
    3 |   ll ans = 0;
      |     ^~~~
      |     ;
a.cc:6:9: error: 'ans' was not declared in this scope
    6 |         ans++;
      |         ^~~
a.cc:9:5: error: 'cout' was not declared in this scope
    9 |     cout << ans << endl;
      |     ^~~~
a.cc:9:13: error: 'ans' was not declared in this scope
    9 |     cout << ans << endl;
      |             ^~~
a.cc:9:20: error: 'endl' was not declared in this scope
    9 |     cout << ans << endl;
      |                    ^~~~
Language: C++

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

#define sl1(a)  scanf("%lld",&a)

int main(){
    long long n,ans=0ll;
    sl1(n);
    for (long long  i=1;i<=n;i++)  ans+=(n-1)/a;
    printf("%lld\n",ans);
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:47: error: 'a' was not declared in this scope
    9 |     for (long long  i=1;i<=n;i++)  ans+=(n-1)/a;
      |                                               ^
Language: C++

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

int main(){
    int N;
    cin >> N;

    long long ans=0;
    
    for(long long a = 1;a < N;a++){
        for(long long b = a;a*b < n;b++){
            if(a == b){
                ans++;
            }else{
                ans += 2;
            }
        }
    }

    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:35: error: 'n' was not declared in this scope
   11 |         for(long long b = a;a*b < n;b++){
      |                                   ^
Language: C++

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

int main(){
    int N;
    cin >> N;

    long long ans=0;
    
    for(long long a = 1;a < N;a++){
        for(long long b = a;a*b<n;b++){
            if(a == b){
                ans++;
            }else{
                ans += 2;
            }
        }
    }



    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:33: error: 'n' was not declared in this scope
   11 |         for(long long b = a;a*b<n;b++){
      |                                 ^
Language: C++

int main()
{
    int n;
    std::cin >> n;
    int count = 0;
    for (int a = 1; a < n; a++)
    {
        for (int b = 1; b <= (n - 1 )/ a; b++)
        {
            count += 1;
        }
    }
    std::cout << count<< std::endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:10: error: 'cin' is not a member of 'std'
    4 |     std::cin >> n;
      |          ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | int main()
a.cc:13:10: error: 'cout' is not a member of 'std'
   13 |     std::cout << count<< std::endl;
      |          ^~~~
a.cc:13:10: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:13:31: error: 'endl' is not a member of 'std'
   13 |     std::cout << count<< std::endl;
      |                               ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | int main()
Language: C++

#include <iostream>
using namespace std;

int main() {
	int n,ans=0;
	cin>>n;
	for(i=1;i<=n;i++)
	ans+=(n-1)/i;
	cout<<ans<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:13: error: 'i' was not declared in this scope
    7 |         for(i=1;i<=n;i++)
      |             ^
Language: C++

nt main()
{
    int n;
    std::cin >> n;
    int count = 0;
    for (int a = 1; a < n; a++)
    {
        for (int b = 1; b <= (n - 1 )/ a; b++)
        {
            count += 1;
        }
    }
    std::cout << n << std::endl;
}

Compiler output:
a.cc:1:1: error: 'nt' does not name a type; did you mean 'int'?
    1 | nt main()
      | ^~
      | int
Language: Java

import java.util.Scanner;

public class Main {
    void run(String[] args){
        Scanner scan=new Scanner(System.in);
        long answer=scan.nextInt();
        Integer i;
        Integer j;
        Integer z;
        Integer sum;
        long count=0;
        for(i=1;i<=answer;i++){
            for(j=1;j<(answer-1)/i;j++){
                for(z=1;z<=answer-sum;z++){
                    if(i*j+z==answer){
                        count=count+1;
                        break;
                    }
                }
            }
        }
        System.out.println(count);
    }
    
    public static void main(String args[]){
        Main printer = new Main();
        printer.run(args);
    }
}


Compiler output:
Main.java:14: error: variable sum might not have been initialized
                for(z=1;z<=answer-sum;z++){
                                  ^
1 error
Language: Java

import java.util.Scanner;

public class Main3 {
    void run(String[] args){
        Scanner scan=new Scanner(System.in);
        long answer=scan.nextInt();
        Integer i;
        Integer j;
        Integer z;
        Integer sum;
        long count=0;
        for(i=1;i<=answer;i++){
            for(j=1;j<(answer-1)/i;j++){
                for(z=1;z<=answer-sum;z++){
                    if(i*j+z==answer){
                        count=count+1;
                        break;
                    }
                }
            }
        }
        System.out.println(count);
    }
    
    public static void main(String args[]){
        Main3 printer = new Main3();
        printer.run(args);
    }
}


Compiler output:
Main.java:3: error: class Main3 is public, should be declared in a file named Main3.java
public class Main3 {
       ^
1 error
Language: C++

#include <bits/stdc++.h>
using namespace std;
    ios::sync_with_stdio(false);
    int n;
    int ans = 0;
    cin >> n;
    for(int a = 1; a < n; a++) {
       ans += (n-1)/a;
    }
    cout << ans << endl;
}

Compiler output:
a.cc:3:5: error: specializing member 'std::basic_ios<char>::sync_with_stdio' requires 'template<>' syntax
    3 |     ios::sync_with_stdio(false);
      |     ^~~
a.cc:6:5: error: 'cin' does not name a type
    6 |     cin >> n;
      |     ^~~
a.cc:7:5: error: expected unqualified-id before 'for'
    7 |     for(int a = 1; a < n; a++) {
      |     ^~~
a.cc:7:20: error: 'a' does not name a type
    7 |     for(int a = 1; a < n; a++) {
      |                    ^
a.cc:7:27: error: 'a' does not name a type
    7 |     for(int a = 1; a < n; a++) {
      |                           ^
a.cc:10:5: error: 'cout' does not name a type
   10 |     cout << ans << endl;
      |     ^~~~
a.cc:11:1: error: expected declaration before '}' token
   11 | }
      | ^
Language: C++

// 　　＿＿
// 　／　<＠ﾌ
//  ｜(ﾉﾉハ))
//  ﾉ从ﾟヮﾟ从
// 　ﾉ｜ｿﾉГ|つ author:hotarunx
// 〈_ﾉ^^^ヽ|
// 　~~tｧtｧ~
#include <algorithm>
#include <array>
#include <atcoder/modint>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <vector>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define int long long

signed main() {
    cin.tie(0);
    ios::sync_with_stdio(0);

    int n, k;
    cin >> n >> k;
    vector<int> l(k), r(k);
    for (int i = 0; i < k; i++) {
        cin >> l[i] >> r[i];
    }

    // 座標系は0-basedとする
    // マスは左から順に0,1,2,3,...,Nの番号がついている

    // いもす法の記録とシミュレートを並行して行うイメージ

    // dp[i]: 0マスからiマスに移動する場合の数
    vector<mint> dp(n);

    // imos[i]: dp[i]-dp[i-1]
    vector<mint> imos(n);
    imos[0] = 1, imos[1] = -1;

    for (int i = 0; i < n; i++) {
        // imos[i]からdp[i]を計算
        dp[i] += (i > 0 ? dp[i - 1] : 0) + imos[i];

        // 配るDP
        // 
        for (int j = 0; j < k; j++) {
            if (i + l[j] < n) imos[i + l[j]] += dp[i];
            if (i + r[j] + 1 < n) imos[i + r[j] + 1] -= dp[i];
        }
    }

    cout << dp[n - 1].val() << "\n";
}


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

#include<iostream>
using namespace std;
int main(){
  int n,o;
  int x=0;
  cin>>n;
  for(int i=i;i<n;i++){
    o=i;
    for(int j=1;j<=o;j++){
      if(o%j=0){
        x++;
      }
    }
  }
  cout<<x<<"\n";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:11: error: lvalue required as left operand of assignment
   10 |       if(o%j=0){
      |          ~^~
Language: C++

#include<iostream>
using namespace std;
int main()
{
  long a,b,c,count=0;
  int n;
  cin>>n;
  for(a=1;a<n;a++)
  {
    for(b=1;b<n;b++)
    {
      for(c=1;c<n;c++)
      { if(a*b+c==n) count++;}
    }
  }
  cout<<count;
  retunt 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:3: error: 'retunt' was not declared in this scope
   17 |   retunt 0;
      |   ^~~~~~
Language: C

#include<stdio.h>

int main()
{
  int A,B,i,N=10^6,l,sum=0;
  
  for(i=1;i<=n;i++)
  {
    A=i;
    l=n/A;
    sum=sum+l;
  }
  printf("%d",sum);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:5:17: warning: result of '10^6' is 12; did you mean '1e6'? [-Wxor-used-as-pow]
    5 |   int A,B,i,N=10^6,l,sum=0;
      |                 ^
      |               ---
      |               1e
main.c:5:15: note: you can silence this warning by using a hexadecimal constant (0xa rather than 10)
    5 |   int A,B,i,N=10^6,l,sum=0;
      |               ^~
      |               0xa
main.c:7:14: error: 'n' undeclared (first use in this function)
    7 |   for(i=1;i<=n;i++)
      |              ^
main.c:7:14: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#<iostream>
#include<cmath>
using namespace std;
int main()
{
    // 整数の入力
    int N;
    int cnt=0;
    int a,b;
    cin >> N;
    for(int i=1;i<N;i++){
      for(int j=1;j*j<=N-i;j++){
         a = (N-i)%j;
         b = (N-i)/j;
        //cout << i <<" "<< j <<" " << (N-i)%j<< endl;
        if(a == 0){
          if(b == j){
            cnt+=1;
          }
          else{
            cnt+=2;
          }
       }
      }
    }

    cout << cnt << endl;
    return 0;
}


Compiler output:
a.cc:1:2: error: invalid preprocessing directive #<
    1 | #<iostream>
      |  ^
a.cc: In function 'int main()':
a.cc:10:5: error: 'cin' was not declared in this scope
   10 |     cin >> N;
      |     ^~~
a.cc:3:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    2 | #include<cmath>
  +++ |+#include <iostream>
    3 | using namespace std;
a.cc:27:5: error: 'cout' was not declared in this scope
   27 |     cout << cnt << endl;
      |     ^~~~
a.cc:27:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:27:20: error: 'endl' was not declared in this scope
   27 |     cout << cnt << endl;
      |                    ^~~~
a.cc:3:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
    2 | #include<cmath>
  +++ |+#include <ostream>
    3 | using namespace std;
Language: C++

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

int main
{
	int n;long long ans=0;
    cin>>n;
    for (int i=1;i<=n;i++)
    {
    	ans+=(n-1)/i;
    }
    cout<<ans<<endl;
}

Compiler output:
a.cc:4:5: error: cannot declare '::main' to be a global variable
    4 | int main
      |     ^~~~
a.cc:6:9: error: expected primary-expression before 'int'
    6 |         int n;long long ans=0;
      |         ^~~
a.cc:6:9: error: expected '}' before 'int'
a.cc:5:1: note: to match this '{'
    5 | {
      | ^
a.cc:7:5: error: 'cin' does not name a type
    7 |     cin>>n;
      |     ^~~
a.cc:8:5: error: expected unqualified-id before 'for'
    8 |     for (int i=1;i<=n;i++)
      |     ^~~
a.cc:8:18: error: 'i' does not name a type
    8 |     for (int i=1;i<=n;i++)
      |                  ^
a.cc:8:23: error: 'i' does not name a type
    8 |     for (int i=1;i<=n;i++)
      |                       ^
a.cc:12:5: error: 'cout' does not name a type
   12 |     cout<<ans<<endl;
      |     ^~~~
a.cc:13:1: error: expected declaration before '}' token
   13 | }
      | ^
Language: C++

#include <bits/stdc++.h>
#define br cout << "\n";
#define pb push_back
#define ll long long 
#define ff first 
#define ss second
#define all(x) x.begin(),x.end()
#define in(a , idx , n ) for (int i = idx ; i < n ; ++i)cin >>a[i];
#define fix() cout <<fixed <<  std::setprecision(10)
	
using namespace std;
const int MOD = 1000*1000*1000 + 7 ; 
const int MAXN = 1000*1000 +10 ;
const ll INF = 1e18 ;
int spf[MAXN];
void xxx()
{
	spf[1]= 1 ;
	for( int i =1 ; i < MAXN ; ++i )
	{
		for( int j = 1 ; i * j < MAXN ; ++j )
		{
				spf[i * j ]++ ;
		} 
	}
	
}


void solve(){
	ll n;
	cin >> n ;
		
		
	// cout << getFac( n ) ; 
	ll res = 0 ;
	for( int i = 1 ; i < n ; ++i )
	{
		ll newNum = n - i ;
		res += spf[newNum]; 
	}
	cout << res-1  , br 
}
	
int main (){
	xxx();
	// int t = 1  ;
	cin >> t ;
	while (t--){
		solve() ; 
	}
    
return 0 ; 
}


Compiler output:
a.cc: In function 'int main()':
a.cc:48:16: error: 't' was not declared in this scope; did you mean 'tm'?
   48 |         cin >> t ;
      |                ^
      |                tm
Language: C++

#include<iostream>
using namespace std;
int main()
{
  int n; cin>>n;
  int ans = 0;
  for(int i = 1; i <= 1000000 ; i++){
    for(int j = 1 ; j <= 1000000 ; j++){
      for(int k = 1 ; k <= 1000000 ; k++){
        if(i*j + k == n){
          ans++;
        }
      }
  }
    cout<<ans<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:2: error: expected '}' at end of input
   17 | }
      |  ^
a.cc:4:1: note: to match this '{'
    4 | {
      | ^
Language: C++

#include <iostream>
#include <cmath>
#include <vector>
#include <string>
using namespace std;

int divisors(int n){
    int cnt = 0;
    int i = 1;
    for (int i=1; i<=sqrt(n); i++){
        if (n % i == 0){
            cnt += 2
            if (i == n/i){
                cnt--;
            }
        //i++;
        } 
    }
    return cnt
}

int main(){
    int n;
    cin >> n;
    int ans = 0;
    for (int i=n; i<1;i--){
        n--;
        cout << i << endl;
        ans += divisors(n);
    }
    cout << ans << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int divisors(int)':
a.cc:12:21: error: expected ';' before 'if'
   12 |             cnt += 2
      |                     ^
      |                     ;
   13 |             if (i == n/i){
      |             ~~       
a.cc:19:15: error: expected ';' before '}' token
   19 |     return cnt
      |               ^
      |               ;
   20 | }
      | ~
Language: C++

#include <iostream>
#inclue <cmath>
using namespace std;
int main()
{
  long long N;
  cin >> N;
  long long ans = 0;
  for (int i = 1; i < N; i++) {
    ans += ((N-1)/i);
  }
  cout << ans << endl;
  return 0;
}


Compiler output:
a.cc:2:2: error: invalid preprocessing directive #inclue; did you mean #include?
    2 | #inclue <cmath>
      |  ^~~~~~
      |  include
Language: C++

#include<bits/stdc++.h>
using namespace std;
//#define FOA(x) for(int i=0;i<x;i++)

int main(){
  int N;
  cin >> N;
  int count=0;
  for(int i=1;i<N-1;i++)[
    count=count+(N-1)/i;
  ]
  cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:24: error: expected ',' before ';' token
   10 |     count=count+(N-1)/i;
      |                        ^
      |                        ,
a.cc:10:24: error: expected identifier before ';' token
a.cc:10:24: error: expected ']' before ';' token
   10 |     count=count+(N-1)/i;
      |                        ^
      |                        ]
a.cc: In lambda function:
a.cc:10:24: error: expected '{' before ';' token
a.cc: In function 'int main()':
a.cc:11:3: error: expected primary-expression before ']' token
   11 |   ]
      |   ^
Language: C++

using namespace std;
//#define FOA(x) for(int i=0;i<x;i++)

int main(){
  int N;
  cin >> N;
  int count,A=0;
  while(A<N){
    A++;
    count=count+(N/A-1)
  }
  cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope
    6 |   cin >> N;
      |   ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | using namespace std;
a.cc:10:24: error: expected ';' before '}' token
   10 |     count=count+(N/A-1)
      |                        ^
      |                        ;
   11 |   }
      |   ~                     
a.cc:12:3: error: 'cout' was not declared in this scope
   12 |   cout << count << endl;
      |   ^~~~
a.cc:12:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:12:20: error: 'endl' was not declared in this scope
   12 |   cout << count << endl;
      |                    ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | using namespace std;
Language: C++

#include<bits/stdc++.h>
using namespace std;
//#define FOA(x) for(int i=0;i<x;i++)

int main(){
  int N;
  cin >> N;
  int count=0;
  for(int i=0;i<N;i++){
    count=count+N/i-1
  }
  cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:22: error: expected ';' before '}' token
   10 |     count=count+N/i-1
      |                      ^
      |                      ;
   11 |   }
      |   ~
Language: C++

#include<bits/stdc++.h>
using namespace std;
//#define FOA(x) for(int i=0;i<x;i++)

int main(){
  int N;
  cin >> N;
  int count=0;
  for(int i=0;i<N;i++){
    int B=1;
    while(A*B<N){
      count++;
      B++;
    }
  }
  cout << count << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:11: error: 'A' was not declared in this scope
   11 |     while(A*B<N){
      |           ^
Language: C++

#include<iostream>

using namespace std;

int main()
{
	int n;
	cin>>n;
  int ctr = 0;
  	for(int a = 1; a < n; i++)
    {
      for (int b = 1; b < n; j++)
      {
        
			if((a * b) == (n - (a * b)))
            {
				ctr++;
            }
        
      }
    }
  cout<<ctr;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:31: error: 'i' was not declared in this scope
   10 |         for(int a = 1; a < n; i++)
      |                               ^
a.cc:12:30: error: 'j' was not declared in this scope
   12 |       for (int b = 1; b < n; j++)
      |                              ^
Language: Java

import java.util.*;
 
 
public class Main {
    public static void main(String[] args) {
 
        Scanner sc = new Scanner(System.in);
        String line = sc.nextLine();
        int n = Integer.parseInt(line);
 
        long count = 0;
        for (int c = 1; c < n; c++) {
            int ab = (n - c);
            for (int i = 1; i < rootab; i++) {
                if ((ab / i) * i == ab) {
                    count++;
                }
            }
        }
 
        System.out.println(count);
    }
 
}

Compiler output:
Main.java:14: error: cannot find symbol
            for (int i = 1; i < rootab; i++) {
                                ^
  symbol:   variable rootab
  location: class Main
1 error
Language: C++

//コンパイラ最適化用
#pragma GCC optimize("Ofast")
#define _GLIBCXX_DEBUG
//インクルード(アルファベット順)
#include<algorithm>//sort,二分探索,など
#include<bitset>//固定長bit集合
#include<chrono>//実行時間計測
#include<cmath>//pow,logなど
#include<complex>//複素数
#include<deque>//両端アクセスのキュー
#include<functional>//sortのgreater
#include<iomanip>//setprecision(浮動小数点の出力の誤差)
#include<iostream>//入出力
#include<iterator>//集合演算(積集合,和集合,差集合など)
#include<map>//map(辞書)
#include<numeric>//iota(整数列の生成),gcdとlcm,accumulate
#include<queue>//キュー
#include<set>//集合
#include<stack>//スタック
#include<string>//文字列
#include<unordered_map>//順序保持しないmap
#include<unordered_set>//順序保持しないset
#include<utility>//pair
#include<vector>//可変長配列
#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef pair<ll, int> pli;
typedef pair<int, int> pii;
typedef pair<ll, ld> pld;
typedef pair<pii, int> ppiii;
typedef pair<pii, ll> ppiill;
typedef pair<pll, ll> ppllll;
typedef pair<pli, int> pplii;
typedef map<int, int> mii;
typedef deque<ll> dll;
typedef queue<ll> qll;
typedef priority_queue<ll> pqll;
typedef priority_queue<ll, vector<ll>, greater<ll>> pqrll;
typedef vector<int> vint;
typedef vector<ll> vll;
typedef vector<vector<ll>> vvll;
typedef vector<vector<int>> vvint;
typedef vector<vector<pll>> vvpll;

//マクロ
//forループ
//引数は、(ループ内変数,動く範囲)か(ループ内変数,始めの数,終わりの数)、のどちらか
//Dがついてないものはループ変数は1ずつインクリメントされ、Dがついてるものはループ変数は1ずつデクリメントされる
#define REP(i,n) for(ll i=0;i<ll(n);i++)
#define REPD(i,n) for(ll i=n-1;i>=0;i--)
#define FOR(i,a,b) for(ll i=a;i<=ll(b);i++)
#define FORD(i,a,b) for(ll i=a;i>=ll(b);i--)
//xにはvectorなどのコンテナ
#define ALL(x) x.begin(),x.end() 
#define SIZE(x) ll(x.size()) 
//定数
#define INF 1000000000000 //10^12:∞
#define MOD 1000000007 //10^9+7:合同式の法
#define MAXR 100000 //10^5:配列の最大のrange
//略記
#define PB push_back //挿入
#define MP make_pair //pairのコンストラクタ
#define F first //pairの一つ目の要素
#define S second //pairの二つ目の要素
#define cin(x) cin >> x
//最大化問題最小化問題
template<class T> inline bool chmin(T& a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}
template<class T> inline bool chmax(T& a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

int main(){
    //入力の高速化用のコード
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    //入力
    ll N = 0;
    cin >> N;

    ll ans = 0;

    FOR(i,N){
        ans += (N-1)/i;
    }
    
    //本文
    //出力
    cout << ans << endl;
    //REP(i,N) cout << ans.at(i) <<endl;
  return 0;
}

Compiler output:
a.cc:97:12: error: macro "FOR" requires 3 arguments, but only 2 given
   97 |     FOR(i,N){
      |            ^
a.cc:55:9: note: macro "FOR" defined here
   55 | #define FOR(i,a,b) for(ll i=a;i<=ll(b);i++)
      |         ^~~
a.cc: In function 'int main()':
a.cc:97:5: error: 'FOR' was not declared in this scope
   97 |     FOR(i,N){
      |     ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 1; i < (int)(n); i++)
using ll = long long;
using pll = pair<ll,ll>;
using vvll = vector<vector<ll>>;
using vll = vector<ll>;
using vstr = vector<string>;
const ll MOD=1000000007;
vll dx{0,1,0,-1};
vll dy{1,0,-1,0};
 
int main()
{
    int N;
    cin>>N;
    int res=0;
    for(int c=1;c<N;c++){
        int ab = N - c;
        for(int a=1;a*a<=ab;a++)
        {
            if(ab%a==0){
                res++; 
                if(ab/a!=a){
                    res++;
                }
            }
        }
    }
    cout<<res;
    return 0;
}
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 1; i < (int)(n); i++)
using ll = long long;
using pll = pair<ll,ll>;
using vvll = vector<vector<ll>>;
using vll = vector<ll>;
using vstr = vector<string>;
const ll MOD=1000000007;
vll dx{0,1,0,-1};
vll dy{1,0,-1,0};

int main()
{
    int N;
    cin>>N;
    int res=0;
    for(int c=1;c<N;c++){
        int ab = N - c;
        for(int a=1;a*a<=ab;a++)
        {
            if(ab%a==0){
                res++; 
                if(ab/a!=a){
                    res++;
                }
            }
        }
    }
    cout<<res;
    return 0;
}

Compiler output:
a.cc:41:10: error: redefinition of 'const ll MOD'
   41 | const ll MOD=1000000007;
      |          ^~~
a.cc:9:10: note: 'const ll MOD' previously defined here
    9 | const ll MOD=1000000007;
      |          ^~~
a.cc:42:5: error: redefinition of 'vll dx'
   42 | vll dx{0,1,0,-1};
      |     ^~
a.cc:10:5: note: 'vll dx' previously declared here
   10 | vll dx{0,1,0,-1};
      |     ^~
a.cc:43:5: error: redefinition of 'vll dy'
   43 | vll dy{1,0,-1,0};
      |     ^~
a.cc:11:5: note: 'vll dy' previously declared here
   11 | vll dy{1,0,-1,0};
      |     ^~
a.cc:45:5: error: redefinition of 'int main()'
   45 | int main()
      |     ^~~~
a.cc:13:5: note: 'int main()' previously defined here
   13 | int main()
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 1; i < (int)(n); i++)
using ll = long long;
using pll = pair<ll,ll>;
using vvll = vector<vector<ll>>;
using vll = vector<ll>;
using vstr = vector<string>;
const ll MOD=1000000007;
vll dx{0,1,0,-1};
vll dy{1,0,-1,0};
 
int main()
{
    int N;
    cin>>N;
    int res=0;
    for(int c=1;c<N;c++){
        int ab = N - c;
        for(int a=1;a*a<=ab;a++)
        {
            if(ab%a==0){
                res++; 
                if(ab/a!=a){
                    res++;
                }
            }
        }
    }
    cout<<res;
    return 0;
}
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 1; i < (int)(n); i++)
using ll = long long;
using pll = pair<ll,ll>;
using vvll = vector<vector<ll>>;
using vll = vector<ll>;
using vstr = vector<string>;
const ll MOD=1000000007;
vll dx{0,1,0,-1};
vll dy{1,0,-1,0};

int main()
{
    int N;
    cin>>N;
    int res=0;
    for(int c=1;c<N;c++){
        int ab = N - c;
        for(int a=1;a*a<=ab;a++)
        {
            if(ab%a==0){
                res++; 
                if(ab/a!=a){
                    res++;
                }
            }
        }
    }
    cout<<res;
    return 0;
}
提出情報

Compiler output:
a.cc:41:10: error: redefinition of 'const ll MOD'
   41 | const ll MOD=1000000007;
      |          ^~~
a.cc:9:10: note: 'const ll MOD' previously defined here
    9 | const ll MOD=1000000007;
      |          ^~~
a.cc:42:5: error: redefinition of 'vll dx'
   42 | vll dx{0,1,0,-1};
      |     ^~
a.cc:10:5: note: 'vll dx' previously declared here
   10 | vll dx{0,1,0,-1};
      |     ^~
a.cc:43:5: error: redefinition of 'vll dy'
   43 | vll dy{1,0,-1,0};
      |     ^~
a.cc:11:5: note: 'vll dy' previously declared here
   11 | vll dy{1,0,-1,0};
      |     ^~
a.cc:45:5: error: redefinition of 'int main()'
   45 | int main()
      |     ^~~~
a.cc:13:5: note: 'int main()' previously defined here
   13 | int main()
      |     ^~~~
a.cc:65:1: error: '\U000063d0\U000051fa\U000060c5\U00005831' does not name a type
   65 | 提出情報
      | ^~~~~~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define printVec(v) printf("{"); for (const auto& i : v) { std::cout << i << ", "; } printf("}\n");
#define degreeToRadian(deg) (((deg)/360)*2*M_PI)
#define radianTodegree(rad) (((rad)/2/M_PI)*360)
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
using namespace std;
using P = pair<int,int>;
using ll = long long;
const ll INF = 1LL<<60;
const int MOD = 1e9 + 7;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};

//cin.tie(0);ios::sync_with_stdio(false);
//cout << fixed << setprecision(15) << y << endl;
int main() {
  int n; cin >> n;

  vector<int> d(n + 1, 1);
  for (int i = 2; i < n; i++) {
    int j = i;
    while (j < n) {
      d[j]++;
      j += i;
    }
  }
  cout << accumulate(d.begin() + 1, d.begin(), 0)
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:29:50: error: expected ';' before 'return'
   29 |   cout << accumulate(d.begin() + 1, d.begin(), 0)
      |                                                  ^
      |                                                  ;
   30 |   return 0;
      |   ~~~~~~
Language: C++

/*
   Author : tarang
*/
#include<bits/stdc++.h>
#define ll long long
#define endl "\n"
#define fastio ios_base::sync_with_stdio(false); cin.tie(0);cout.tie(0);
const int MOD = 1000000007;
#define PI = acos(-1)
using namespace std ;
int main(){
   ll n ; cin >> n ;
   n-=1;
   for(int i = 1 ; i <= n ; i++){
   	   ans += n/i;
   }
   cout << ans << endl;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:15:12: error: 'ans' was not declared in this scope; did you mean 'abs'?
   15 |            ans += n/i;
      |            ^~~
      |            abs
a.cc:17:12: error: 'ans' was not declared in this scope; did you mean 'abs'?
   17 |    cout << ans << endl;
      |            ^~~
      |            abs
Language: C++

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

int main() {
	int N;
	cin >> N;
	int ans = 0;
	for int i = 1; i < N; ++i) {
		ans += (N - 1)/i;
	}
	cout << ans << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:13: error: expected '(' before 'int'
    8 |         for int i = 1; i < N; ++i) {
      |             ^~~
      |             (
Language: C++

#include <stdio.h>
int main() {
    
    int N;
    cin >> a;
    
    int ans = 0;
    
    for (C = 1; C < N; C++){
        for (A = 1; pow(A,2) + C < N; A++) {
            if ((N - C) % A == 0) {
                if ((N - C) == pow(A,2)) ans++;
                else ans = ans + 2;
            }
        }
    }
    
    cout << ans << endl;
    
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: 'cin' was not declared in this scope
    5 |     cin >> a;
      |     ^~~
a.cc:5:12: error: 'a' was not declared in this scope
    5 |     cin >> a;
      |            ^
a.cc:9:10: error: 'C' was not declared in this scope
    9 |     for (C = 1; C < N; C++){
      |          ^
a.cc:10:14: error: 'A' was not declared in this scope
   10 |         for (A = 1; pow(A,2) + C < N; A++) {
      |              ^
a.cc:10:21: error: 'pow' was not declared in this scope
   10 |         for (A = 1; pow(A,2) + C < N; A++) {
      |                     ^~~
a.cc:18:5: error: 'cout' was not declared in this scope
   18 |     cout << ans << endl;
      |     ^~~~
a.cc:18:20: error: 'endl' was not declared in this scope
   18 |     cout << ans << endl;
      |                    ^~~~
Language: C++

const int N = 1e6+5;
int Div[N];
 
int main()
{
	ios::sync_with_stdio(0); cin.tie(0);
	for (int i = 1; i < N; ++i)
		for (int j = i; j < N; j += i)
			++Div[j];
	int n; cin >> n;
	long long ans = 0;
	for (int c = 1; c < n; ++c)
		ans += Div[n-c];
	cout << ans << '\n';
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'ios' has not been declared
    6 |         ios::sync_with_stdio(0); cin.tie(0);
      |         ^~~
a.cc:6:34: error: 'cin' was not declared in this scope
    6 |         ios::sync_with_stdio(0); cin.tie(0);
      |                                  ^~~
a.cc:14:9: error: 'cout' was not declared in this scope
   14 |         cout << ans << '\n';
      |         ^~~~
Language: C++

const int N = 1e6+5;
int Div[N];
 
int main()
{
	ios::sync_with_stdio(0); cin.tie(0);
	for (int i = 1; i < N; ++i)
		for (int j = i; j < N; j += i)
			++Div[j];
	int n; cin >> n;
	ll ans = 0;
	for (int c = 1; c < n; ++c)
		ans += Div[n-c];
	cout << ans << '\n';
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'ios' has not been declared
    6 |         ios::sync_with_stdio(0); cin.tie(0);
      |         ^~~
a.cc:6:34: error: 'cin' was not declared in this scope
    6 |         ios::sync_with_stdio(0); cin.tie(0);
      |                                  ^~~
a.cc:11:9: error: 'll' was not declared in this scope
   11 |         ll ans = 0;
      |         ^~
a.cc:13:17: error: 'ans' was not declared in this scope
   13 |                 ans += Div[n-c];
      |                 ^~~
a.cc:14:9: error: 'cout' was not declared in this scope
   14 |         cout << ans << '\n';
      |         ^~~~
a.cc:14:17: error: 'ans' was not declared in this scope
   14 |         cout << ans << '\n';
      |                 ^~~
Language: C++

#include<bits/stdc++.h>
typedef long long ll;
#define m 1000000007
using namespace std;
int main()
{
  int n;
  cin>>n;
  --n;
  for(int i=0;i<=n;i++)
    ans+=n/i;
  
  cout<<ans<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:5: error: 'ans' was not declared in this scope; did you mean 'abs'?
   11 |     ans+=n/i;
      |     ^~~
      |     abs
a.cc:13:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   13 |   cout<<ans<<endl;
      |         ^~~
      |         abs
Language: C++

int main(){
  int N;cin>>N;
  int div[N];
  for (int i = 1; i < N; ++i)
		for (int j = i; j < N; j += i)
			++Div[j];
	int n; cin >> n;
	ll ans = 0;
	for (int c = 1; c < n; ++c)
		ans += Div[n-c];
	cout << ans << '\n';
}

Compiler output:
a.cc: In function 'int main()':
a.cc:2:9: error: 'cin' was not declared in this scope
    2 |   int N;cin>>N;
      |         ^~~
a.cc:6:27: error: 'Div' was not declared in this scope; did you mean 'div'?
    6 |                         ++Div[j];
      |                           ^~~
      |                           div
a.cc:8:9: error: 'll' was not declared in this scope
    8 |         ll ans = 0;
      |         ^~
a.cc:10:17: error: 'ans' was not declared in this scope
   10 |                 ans += Div[n-c];
      |                 ^~~
a.cc:10:24: error: 'Div' was not declared in this scope; did you mean 'div'?
   10 |                 ans += Div[n-c];
      |                        ^~~
      |                        div
a.cc:11:9: error: 'cout' was not declared in this scope
   11 |         cout << ans << '\n';
      |         ^~~~
a.cc:11:17: error: 'ans' was not declared in this scope
   11 |         cout << ans << '\n';
      |                 ^~~
Language: C++

#include <bits/stdc++.h>
#include <boost/multiprecision/cpp_dec_float.hpp>
#include <boost/multiprecision/cpp_int.hpp>
using namespace std;
namespace mp = boost::multiprecision;
// 任意長整数型
using Bint = mp::cpp_int;
// 仮数部が1024ビットの浮動小数点数型(TLEしたら小さくする)
using Real = mp::number<mp::cpp_dec_float<1024>>;

int main()
{
	unsigned int N;
	cin >> N;
	
	for(unsigned int a=1;a<N;a++)
	{
		count+=(N-1)/a;
	}
	cout << count << endl;
}

Compiler output:
a.cc:2:10: fatal error: boost/multiprecision/cpp_dec_float.hpp: No such file or directory
    2 | #include <boost/multiprecision/cpp_dec_float.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
#include <boost/multiprecision/cpp_dec_float.hpp>
#include <boost/multiprecision/cpp_int.hpp>
using namespace std;
namespace mp = boost::multiprecision;
// 任意長整数型
using Bint = mp::cpp_int;
// 仮数部が1024ビットの浮動小数点数型(TLEしたら小さくする)
using Real = mp::number<mp::cpp_dec_float<1024>>;

int main()
{
	unsigned int N;
	unsigned int count=0;
	cin >> N;
	
	for(unsigned int a=1;a<N;i++)
	{
		count+=(N-1)/a;
	}
	cout << count << endl;
}

Compiler output:
a.cc:2:10: fatal error: boost/multiprecision/cpp_dec_float.hpp: No such file or directory
    2 | #include <boost/multiprecision/cpp_dec_float.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
#include <boost/multiprecision/cpp_dec_float.hpp>
#include <boost/multiprecision/cpp_int.hpp>
using namespace std;
namespace mp = boost::multiprecision;
// 任意長整数型
using Bint = mp::cpp_int;
// 仮数部が1024ビットの浮動小数点数型(TLEしたら小さくする)
using Real = mp::number<mp::cpp_dec_float<1024>>;

int main()
{
	unsigned int N;
	unsigned int count=0;
	unsigned int sq_count=0;
	cin >> N;
	
	for(int a=1;a<N;i++)
	{
		count+=(N-1)/a;
	}
	cout << count << endl;
}

Compiler output:
a.cc:2:10: fatal error: boost/multiprecision/cpp_dec_float.hpp: No such file or directory
    2 | #include <boost/multiprecision/cpp_dec_float.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
#include <boost/multiprecision/cpp_dec_float.hpp>
#include <boost/multiprecision/cpp_int.hpp>
using namespace std;
namespace mp = boost::multiprecision;
// 任意長整数型
using Bint = mp::cpp_int;
// 仮数部が1024ビットの浮動小数点数型(TLEしたら小さくする)
using Real = mp::number<mp::cpp_dec_float<1024>>;

int main()
{
	unsigned int N;
	unsigned int count=0;
	unsigned int sq_count=0;
	cin >> N;
	
	for(int a=1;i<N;i++)
	{
		count+=(N-1)/a;
	}
	cout << count << endl;
}

Compiler output:
a.cc:2:10: fatal error: boost/multiprecision/cpp_dec_float.hpp: No such file or directory
    2 | #include <boost/multiprecision/cpp_dec_float.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
#include <boost/multiprecision/cpp_dec_float.hpp>
#include <boost/multiprecision/cpp_int.hpp>
using namespace std;
namespace mp = boost::multiprecision;
// 任意長整数型
using Bint = mp::cpp_int;
// 仮数部が1024ビットの浮動小数点数型(TLEしたら小さくする)
using Real = mp::number<mp::cpp_dec_float<1024>>;

int main()
{
	unsigned int N;
	unsigned int count=0;
	unsigned int sq_count=0;
	cin >> N;
	
	for(int a=1;i<N;i++)
	{
		count+=(N-1)/a;
	}
	cout << count << endl;

Compiler output:
a.cc:2:10: fatal error: boost/multiprecision/cpp_dec_float.hpp: No such file or directory
    2 | #include <boost/multiprecision/cpp_dec_float.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<bits/stdc++.h>
using namespaces std;
int main(){
  int n;cin >> n;
  int ans = 0;
  for(int a = 1;a <= n;a++) ans += ((n-1) / a);
  cout << ans << '\n';
}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namespaces'
    2 | using namespaces std;
      |       ^~~~~~~~~~
a.cc: In function 'int main()':
a.cc:4:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |   int n;cin >> n;
      |         ^~~
      |         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 << ans << '\n';
      |   ^~~~
      |   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(){
    long long int N;
    long long int count = 0;
    cin >> N;
    for(long long int a = 1; a < N; a++){
        count += (N-1) / a;
    }
    cout << a << endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:13: error: 'a' was not declared in this scope
   11 |     cout << a << endl;
      |             ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int main() {
  int N;
  int x,y,sq;
  long long int c=0;
  cin >> N ;
  N=N-1;
  y = N; 
  for(int i = 1; i <sqrt(N); i++){
    x = floor(N/(i+1));
      
    cnt += i*floor(y-x);
    y = x;
  }
       
  sq =int(sqrt(N))*int(sqrt(N));
  cnt = cnt*2+sq;
  cout << cnt << endl;	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:5: error: 'cnt' was not declared in this scope; did you mean 'int'?
   14 |     cnt += i*floor(y-x);
      |     ^~~
      |     int
a.cc:19:3: error: 'cnt' was not declared in this scope; did you mean 'int'?
   19 |   cnt = cnt*2+sq;
      |   ^~~
      |   int
Language: C++

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

#define REP(i,n) for(int i=0, i##_len=(n); i<i##_len; ++i)
#define all(x) (x).begin(),(x).end()
using ll = long long;
using P = pair<ll, ll>;
string char_to_string(char val) {
  return string(1, val);
}
int char_to_int(char val) {
  return val - '0';
}
template<class T> inline bool chmin(T& a, T b) {
  if (a > b) {
    a = b;
    return true;
  }
  return false;
}
template<class T> inline bool chmax(T& a, T b) {
  if (a < b) {
    a = b;
    return true;
  }
  return false;
}
struct edge {
  ll to, cost;
}

int main() {

}

Compiler output:
a.cc:30:2: error: expected ';' after struct definition
   30 | }
      |  ^
      |  ;