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

#include<bits/stdc++.h>
using namespace std;
main(){
  int H,W,sum=0;
  vector<vector<int>> a;
  cin>>H>>W;
  a.resize(H);
  for(int i=0;i<H;i++)a[i].resize(W);
  for(int i=0;i<H;i++)for(int j=0;j<W;j++)cin>>a[i][j],sum+=a[i][j];
  for(int i=0;i<H;i++){
    if(i%2){
      for(int j=0;j<W-1;j++){
        if(x[i][j]%2){
          x[i][j]--,x[i][j+1]++;
          cout<<i<<" "<<j<<" "<<i<<" "<<j+1<<endl;
        }
      }
      //j==W-1
      if(i==H-1)return 0;
      if(x[i][W-1]%2){
        x[i][W-1]--,x[i+1][W-1]++;
        cout<<i<<" "<<W-1<<" "<<i+1<<" "<<W-1<<endl;
      }
    }
    else{
      for(int j=W-1;j>0;j--){
        if(x[i][j]%2){
          x[i][j]--,x[i][j-1]++;
          cout<<i<<" "<<j<<" "<<i<<" "<<j-1<<endl;
        }
      }
      //j==0
      if(i==H-1)return 0;
      if(x[i][0]%2){
        x[i][0]--,x[i+1][0]++;
        cout<<i<<" "<<0<<" "<<i+1<<" "<<0<<endl;
      }
    }
  }
}

Compiler output:
a.cc:3:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    3 | main(){
      | ^~~~
a.cc: In function 'int main()':
a.cc:13:12: error: 'x' was not declared in this scope
   13 |         if(x[i][j]%2){
      |            ^
a.cc:20:10: error: 'x' was not declared in this scope
   20 |       if(x[i][W-1]%2){
      |          ^
a.cc:27:12: error: 'x' was not declared in this scope
   27 |         if(x[i][j]%2){
      |            ^
a.cc:34:10: error: 'x' was not declared in this scope
   34 |       if(x[i][0]%2){
      |          ^
Language: C++

#include<iostream>
#include<algorithm>
using namespace std;

int main(){  
  int h,w;
  cin >> h >> w;
  int a[h][w];
  for(int i=0;i<h;i++){
    for(int j=0;j<w,j++){
      cin >> a[i][j];
    }
  }
  
  for(int i=0;i<h;i++){
    for(int j=0;j<w,j++){
      if(a[i][j]%2!=0 && i*j!=(h-1)(w-1)){
        if(j==w-1){
          cout << i << " " << j << " " << i+1 << " " << j << endl;
          a[i][j]--;
          a[i+1][j]++;
        }else{
          cout << i << " " << j << " " << i << " " << j+1 << endl;
          a[i][j]--;
          a[i][j+1]++;
        }
      }
    }
  }
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:24: error: expected ';' before ')' token
   10 |     for(int j=0;j<w,j++){
      |                        ^
      |                        ;
a.cc:16:24: error: expected ';' before ')' token
   16 |     for(int j=0;j<w,j++){
      |                        ^
      |                        ;
a.cc:17:36: error: expression cannot be used as a function
   17 |       if(a[i][j]%2!=0 && i*j!=(h-1)(w-1)){
      |                               ~~~~~^~~~~
Language: C++

#include <iostream>
#include <vector>
#include<iomanip>
#include <algorithm>
#include <stack>
using namespace std;
typedef long long ll;
#define rep(i,n) for(int i=0;i<(n);i++)
#include <iostream>
static const int MAX = 510;
int H, W;
int d[MAX][MAX];
int c[MAX][MAX];

bool in(int u, int v) {
    return  (u >= 0 and u < H and v >= 0 and v < W);
}

//gusu
bool even(int a) {
    return a%2 != 0;
}

void dfs(int i, int j) {
    stack<pair<int,int>> S;
    S.push(make_pair(i,j));
    
    while(!S.empty()) {
        pair<int,int> p = S.top();
        int u = p.first+1;
        int v = p.second;
        if (in(u,v) and c[u][v] == 0 and even(d[u][v])) {
            S.push(make_pair(u,v));
        } else {
            S.pop();
        }
            
        
        
        
    }
    if (odd(C[i][j])){
        
    }
    
}

int main(int argc, const char * argv[]) {
    int i,j;
    cin >> H >> W;

    for (i = 0; i < H; i++) {
        for (j = 0; j < W; j++) {
            c[i][j] = 0;
            d[i][j] = 0;
        }
    }
    
    for (i = 0; i < H; i++) {
        for (j = 0; j < W; j++) {
            cin >> d[i][j];
        }
    }
    
    
    
    
    return 0;
}


Compiler output:
a.cc: In function 'void dfs(int, int)':
a.cc:42:13: error: 'C' was not declared in this scope
   42 |     if (odd(C[i][j])){
      |             ^
a.cc:42:9: error: 'odd' was not declared in this scope
   42 |     if (odd(C[i][j])){
      |         ^~~
Language: C

#include <stdio.h>

int main(){
   int h,w,a,x[500],y[500],n,yy[500*500],xx[500*500],yn[500*500],xn[500*500],nn,i,j;

   scanf("%d %d",&h,&w);
   for (n=i=0;i<h;i++)
      for (j=0;j<w;j++) {
         scanf("%d",&a);
         if (a%2==1) {
            x[n]=j;y[n]=i;
            n++;
      }
   nn=0;
   for (i=0;i<n;i+=2) {
      xx=x[n];yy=y[n];
      while (yy!=y[n+1]) {
         y[nn]=yy;x[nn]=xx;y[nn]=yy+1;x[nn]=xx;
         yy++;
         nn++;
      }
       while (xx!=x[n+1]) {
         y[nn]=yy;x[nn]=xx;y[nn]=yy;x[nn]=xx+1;
         xx++;
         nn++;
      }
   }
   printf("%d\n",nn+1);
   for (i=0;i<nn;i++)
      printf("%d %d %d %d\n",y[i],x[i],yn[i],xn[i]);
   return 0;
}


Compiler output:
main.c: In function 'main':
main.c:16:9: error: assignment to expression with array type
   16 |       xx=x[n];yy=y[n];
      |         ^
main.c:16:17: error: assignment to expression with array type
   16 |       xx=x[n];yy=y[n];
      |                 ^
main.c:17:16: warning: comparison between pointer and integer
   17 |       while (yy!=y[n+1]) {
      |                ^~
main.c:18:15: error: assignment to 'int' from 'int *' makes integer from pointer without a cast [-Wint-conversion]
   18 |          y[nn]=yy;x[nn]=xx;y[nn]=yy+1;x[nn]=xx;
      |               ^
main.c:18:24: error: assignment to 'int' from 'int *' makes integer from pointer without a cast [-Wint-conversion]
   18 |          y[nn]=yy;x[nn]=xx;y[nn]=yy+1;x[nn]=xx;
      |                        ^
main.c:18:33: error: assignment to 'int' from 'int *' makes integer from pointer without a cast [-Wint-conversion]
   18 |          y[nn]=yy;x[nn]=xx;y[nn]=yy+1;x[nn]=xx;
      |                                 ^
main.c:18:44: error: assignment to 'int' from 'int *' makes integer from pointer without a cast [-Wint-conversion]
   18 |          y[nn]=yy;x[nn]=xx;y[nn]=yy+1;x[nn]=xx;
      |                                            ^
main.c:19:12: error: lvalue required as increment operand
   19 |          yy++;
      |            ^~
main.c:22:17: warning: comparison between pointer and integer
   22 |        while (xx!=x[n+1]) {
      |                 ^~
main.c:23:15: error: assignment to 'int' from 'int *' makes integer from pointer without a cast [-Wint-conversion]
   23 |          y[nn]=yy;x[nn]=xx;y[nn]=yy;x[nn]=xx+1;
      |               ^
main.c:23:24: error: assignment to 'int' from 'int *' makes integer from pointer without a cast [-Wint-conversion]
   23 |          y[nn]=yy;x[nn]=xx;y[nn]=yy;x[nn]=xx+1;
      |                        ^
main.c:23:33: error: assignment to 'int' from 'int *' makes integer from pointer without a cast [-Wint-conversion]
   23 |          y[nn]=yy;x[nn]=xx;y[nn]=yy;x[nn]=xx+1;
      |                                 ^
main.c:23:42: error: assignment to 'int' from 'int *' makes integer from pointer without a cast [-Wint-conversion]
   23 |          y[nn]=yy;x[nn]=xx;y[nn]=yy;x[nn]=xx+1;
      |                                          ^
main.c:24:12: error: lvalue required as increment operand
   24 |          xx++;
      |            ^~
main.c:32:1: error: expected declaration or statement at end of input
   32 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll dx[] = { 1, -1, 0, 0 };
ll dy[] = { 0,0,1,-1 };
int H, W;
int field[510][510];
int a[HW + 1], b[H*W + 1], c[H*W + 1], d[H*W + 1];
int main() {
	cin >> H >> W;
	for (int i = 0; i < H; i++) {
		for (int j = 0; j < W; j++) {
			cin >> field[i][j];
		}
	}
	int cnt = 0;
	for (int i = 0; i < H; i++) {
		for (int j = 0; j < W; j++) {
			for (int k = 0; k < 4; k++) {
				int ny = i + dy[k];
				int nx = j + dx[k];
				if (field[i][j] == 0) {
					continue;
				}
				if (ny >= 0 && ny < H && nx >= 0 && nx < W) {
					if (field[i][j] % 2 == 1 && field[ny][nx] == 1) {
						field[i][j]--;
						field[ny][nx]++;
						cout << i + 1 << " " << j + 1 << " " << ny + 1 << " " << nx + 1 << endl;
						a[cnt] = i + 1, b[cnt] = j + 1, c[cnt] = ny + 1, d[cnt] = nx + 1;
						cnt++;
						break;
					}
					for (int m = 0; m <4; m++) {
						int sy = ny + dy[m];
						int sx = nx + dx[m];
						if (sy >= 0 && sy < H && sx >= 0 && sx < W) {
							if (sy == i && sx == j) { continue; }
							if (field[i][j] % 2 == 1 && field[ny][nx] % 2 == 0 && field[sy][sx] == 1) {

								field[i][j]--;
								field[ny][nx]++;
								a[cnt] = i + 1, b[cnt] = j + 1, c[cnt] = ny + 1, d[cnt] = nx + 1;

								cnt++;
								field[ny][nx]--;
								field[sy][sx]++;

								a[cnt] = ny + 1, b[cnt] = nx + 1, c[cnt] = sy + 1, d[cnt] = sx + 1;
								cnt++;
								break;
							}
						}
					}
				}
			}
		}
	}
	cout << cnt << endl;
	for (int i = 0; i < cnt; i++) {
		cout << a[i] << " " << b[i] << " " << c[i] << " " << d[i] << endl;
	}
}

Compiler output:
a.cc:8:7: error: 'HW' was not declared in this scope; did you mean 'W'?
    8 | int a[HW + 1], b[H*W + 1], c[H*W + 1], d[H*W + 1];
      |       ^~
      |       W
a.cc:8:22: error: size of array 'b' is not an integral constant-expression
    8 | int a[HW + 1], b[H*W + 1], c[H*W + 1], d[H*W + 1];
      |                  ~~~~^~~
a.cc:8:34: error: size of array 'c' is not an integral constant-expression
    8 | int a[HW + 1], b[H*W + 1], c[H*W + 1], d[H*W + 1];
      |                              ~~~~^~~
a.cc:8:46: error: size of array 'd' is not an integral constant-expression
    8 | int a[HW + 1], b[H*W + 1], c[H*W + 1], d[H*W + 1];
      |                                          ~~~~^~~
a.cc: In function 'int main()':
a.cc:30:49: error: 'a' was not declared in this scope
   30 |                                                 a[cnt] = i + 1, b[cnt] = j + 1, c[cnt] = ny + 1, d[cnt] = nx + 1;
      |                                                 ^
a.cc:43:65: error: 'a' was not declared in this scope
   43 |                                                                 a[cnt] = i + 1, b[cnt] = j + 1, c[cnt] = ny + 1, d[cnt] = nx + 1;
      |                                                                 ^
a.cc:61:25: error: 'a' was not declared in this scope
   61 |                 cout << a[i] << " " << b[i] << " " << c[i] << " " << d[i] << endl;
      |                         ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll dx[] = { 1, -1, 0, 0 };
ll dy[] = { 0,0,1,-1 };
int H, W;
int field[510][510];
int a[HW + 1], b[H*W + 1], c[H*W + 1], d[H*W + 1]
int main() {
	cin >> H >> W;
	for (int i = 0; i < H; i++) {
		for (int j = 0; j < W; j++) {
			cin >> field[i][j];
		}
	}
	int cnt = 0;
	for (int i = 0; i < H; i++) {
		for (int j = 0; j < W; j++) {
			for (int k = 0; k < 4; k++) {
				int ny = i + dy[k];
				int nx = j + dx[k];
				if (field[i][j] == 0) {
					continue;
				}
				if (ny >= 0 && ny < H && nx >= 0 && nx < W) {
					if (field[i][j] % 2 == 1 && field[ny][nx] == 1) {
						field[i][j]--;
						field[ny][nx]++;
						cout << i + 1 << " " << j + 1 << " " << ny + 1 << " " << nx + 1 << endl;
						a[cnt] = i + 1, b[cnt] = j + 1, c[cnt] = ny + 1, d[cnt] = nx + 1;
						cnt++;
						break;
					}
					for (int m = 0; m <4; m++) {
						int sy = ny + dy[m];
						int sx = nx + dx[m];
						if (sy >= 0 && sy < H && sx >= 0 && sx < W) {
							if (sy == i && sx == j) { continue; }
							if (field[i][j] % 2 == 1 && field[ny][nx] % 2 == 0 && field[sy][sx] == 1) {

								field[i][j]--;
								field[ny][nx]++;
								a[cnt] = i + 1, b[cnt] = j + 1, c[cnt] = ny + 1, d[cnt] = nx + 1;

								cnt++;
								field[ny][nx]--;
								field[sy][sx]++;

								a[cnt] = ny + 1, b[cnt] = nx + 1, c[cnt] = sy + 1, d[cnt] = sx + 1;
								cnt++;
								break;
							}
						}
					}
				}
			}
		}
	}
	cout << cnt << endl;
	for (int i = 0; i < cnt; i++) {
		cout << a[i] << " " << b[i] << " " << c[i] << " " << d[i] << endl;
	}
}

Compiler output:
a.cc:8:7: error: 'HW' was not declared in this scope; did you mean 'W'?
    8 | int a[HW + 1], b[H*W + 1], c[H*W + 1], d[H*W + 1]
      |       ^~
      |       W
a.cc:8:22: error: size of array 'b' is not an integral constant-expression
    8 | int a[HW + 1], b[H*W + 1], c[H*W + 1], d[H*W + 1]
      |                  ~~~~^~~
a.cc:8:34: error: size of array 'c' is not an integral constant-expression
    8 | int a[HW + 1], b[H*W + 1], c[H*W + 1], d[H*W + 1]
      |                              ~~~~^~~
a.cc:9:1: error: expected initializer before 'int'
    9 | int main() {
      | ^~~
Language: C

#include <stdio.h>

int main(){
   int h,w,a,x[500],y[500],n,xx,yy,y[500*500],x[500*500],yn[500*500],xn[500*500],nn,i,j;

   scanf("%d %d",&h,&w);
   for (n=i=0;i<h;i++)
      for (j=0;j<w;j++) {
         scanf("%d",&a);
         if (a%2==1) {
            x[n]=j;y[n]=i;
            n++;
      }
   nn=0;
   for (i=0;i<n;i+=2) {
      xx=x[n];yy=y[n];
      while (yy!=y[n+1]) {
         y[nn]=yy;x[nn]=xx;y[nn]=yy+1;x[nn]=xx;
         yy++;
         nn++;
      }
       while (xx!=x[n+1]) {
         y[nn]=yy;x[nn]=xx;y[nn]=yy;x[nn]=xx+1;
         xx++;
         nn++;
      }
   }
   printf("%d\n",nn+1);
   for (i=0;i<nn;i++)
      printf("%d %d %d %d\n",y[i],x[i],yn[i],xn[i]);
   return 0;
}


Compiler output:
main.c: In function 'main':
main.c:4:36: error: conflicting types for 'y'; have 'int[250000]'
    4 |    int h,w,a,x[500],y[500],n,xx,yy,y[500*500],x[500*500],yn[500*500],xn[500*500],nn,i,j;
      |                                    ^
main.c:4:21: note: previous declaration of 'y' with type 'int[500]'
    4 |    int h,w,a,x[500],y[500],n,xx,yy,y[500*500],x[500*500],yn[500*500],xn[500*500],nn,i,j;
      |                     ^
main.c:4:47: error: conflicting types for 'x'; have 'int[250000]'
    4 |    int h,w,a,x[500],y[500],n,xx,yy,y[500*500],x[500*500],yn[500*500],xn[500*500],nn,i,j;
      |                                               ^
main.c:4:14: note: previous declaration of 'x' with type 'int[500]'
    4 |    int h,w,a,x[500],y[500],n,xx,yy,y[500*500],x[500*500],yn[500*500],xn[500*500],nn,i,j;
      |              ^
main.c:32:1: error: expected declaration or statement at end of input
   32 | }
      | ^
Language: C

#include <iostream>
#include <vector>
#include <utility>

using namespace std;

bool use[505][505];
vector<pair<int, int> > com;
int h, w;
int a[505][505];

int dfs(int y, int x);
int _dfs(int y, int x);

int main()
{
    int i, j;
    int comm = 0;

    scanf("%d %d", &h, &w);
    for (i = 1; i <= h; i++) {
        for (j = 1; j <= w; j++) {
            scanf("%d", &a[i][j]);
        }
    }

    for (i = 1; i <= h; i++) {
        for (j = 1; j < w; j++) {
            if (a[i][j] & 1 && !use[i][j]) {
                if(dfs(i, j + 1)) {
                    comm++;
                    use[i][j] = true;
                    com.push_back(make_pair(i, j));
                }
            }
        }
    }

    for (i = 1; i < h; i++) {
        for (j = 1; j <= w; j++) {
            if (a[i][j] & 1 && !use[i][j]) {
                if(_dfs(i + 1, j)) {
                    comm++;
                    use[i][j] = true;
                    com.push_back(make_pair(i, j));
                }
            }
        }
    }

    
    cout << com.size() - comm << endl;
    for (i = 0; i < com.size() - 1; i++) {
        cout << com[i].first << " " << com[i].second << " ";
        cout << com[i + 1].first << " " << com[i + 1].second << endl;

        if (a[com[i + 1].first][com[i + 1].second] & 1) i++;
    }
    
    return 0;
}

int dfs(int y, int x)
{
    if (a[y][x] & 1 && !use[y][x]) {
        com.push_back(make_pair(y, x));
        use[y][x] = true;
        return 1;
    } else if (use[y][x]) {
        return 0;
    }

    int rec = 0;

    if (x + 1 <= w && !use[y][x + 1]) rec = dfs(y, x + 1);
    else if (y + 1 <= h && !use[y + 1][x]) rec = _dfs(y + 1, x);

    if (rec) {
        com.push_back(make_pair(y, x));
        use[y][x] = true;
    }

    return rec;
}

int _dfs(int y, int x)
{
    if (a[y][x] & 1 && !use[y][x]) {
        com.push_back(make_pair(y, x));
        use[y][x] = true;
        return 1;
    } else if (use[y][x]) {
        return 0;
    }

    int rec = 0;

    if (y + 1 <= h && !use[y + 1][x]) rec = _dfs(y + 1, x);
    else if (x + 1 <= w && !use[y][x + 1]) rec = dfs(y, x + 1);

    if (rec) {
        com.push_back(make_pair(y, x));
        use[y][x] = true;
    }

    return rec;
}


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

#include <iostream>
#include <fstream>
#include <cmath>  
#include <cstdlib>
#include <ctime>
#include <algorithm>
#include <numeric>
#include <functional>
#include <string> 
#include <vector>
#include <bitset>
#include <map>
#include <set>
#include <stack>
#include <queue>
#include <deque>

using namespace std;
using ll = long long;
using ull = unsigned long long;
using ld = long double;

#define REP(i,n) for(int i = 0; i < int(n); i++)
#define REREP(i,n) for(int i = int(n - 1); i >= 0; i--)
#define FOR(i, m, n) for(int i = int(m);i < int(n);i++)
#define REFOR(i, m, n) for(int i = int(n - 1);i >= int(m);i--)
#define ALL(obj) (obj).begin(),(obj).end()
#define fi first 
#define se second

#define VI vector<int>
#define VVI vector<vector<int>>
#define VVVI vector<vector<vector<int>>>
#define VD vector<double>
#define VVD vector<vector<double>>
#define VVVD vector<vector<vector<double>>>
#define VL vector<ll>
#define VVL vector<vector<ll>>
#define VVVL vector<vector<vector<ll>>>
#define VB vector<bool>
#define VVB vector<vector<bool>>
#define VVVB vector<vector<vector<bool>>>
#define VS vector<string>
#define VVS vector<vector<string>>
#define VVVS vector<vector<vector<string>>>

#define PII pair<int,int>
#define PDD pair<double,double>
#define PLL pair<ll,ll>
#define VPII vector<pair<int,int>>
#define VVPII vector<vector<pair<int,int>>>
#define VVVPII vector<vector<vector<pair<int,int>>>>
#define VPLL vector<pair<ll,ll>>
#define VVPLL vector<vector<pair<ll,ll>>>
#define VVVPLL vector<vector<vector<pair<ll,ll>>>>

const ll MOD = (ll)1e9 + 7;
const ll HINF = (ll)1e18;
const ll LINF = (ll)1e9;
const long double PI = 3.1415926535897932384626433;


void YN(bool flag) {
	cout << ((flag) ? "YES" : "NO") << endl;
}

void Yn(bool flag) {
	cout << ((flag) ? "Yes" : "No") << endl;
}

void yn(bool flag) {
	cout << ((flag) ? "yes" : "no") << endl;
}

int main() {
int H,W;
cin >> H >> W;
VVI a(H,VI(W));
REP(i,H)REP(j,W)cin>>a[i][j];
VI s,t,u,v;

REP(i,H){
int x,y;

if(i%2==0){

REP(j,W){
if(i==H-1&&j==W-1)break;
if(j!=W-1){
y=i;
x=j+1;
}
else{
y=i+1;
x=j;
}
if(a[i][j]%2==1){
a[i][j]--;
a[y][x]++;
s.push_back(i);
t.push_back(j);
u.push_back(y);
v.push_back(x);
}
  
}

}

else{

for(j=W-1;j>=0;j--){
if(i==H-1&&j==0)break;
if(j!=0){
y=i;
x=j-1;
}
else{
y=i+1;
x=j;
}
if(a[i][j]%2==1){
a[i][j]--;
a[y][x]++;
s.push_back(i);
t.push_back(j);
u.push_back(y);
v.push_back(x);
}
  
 }

}
  
  
 }
cout<<s.size()<<endl;
REP(i,s.size()) cout <<s[i]<<" "<<t[i]<<" "<<u[i]<<" "<<v[i]<<endl;











	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:112:5: error: 'j' was not declared in this scope
  112 | for(j=W-1;j>=0;j--){
      |     ^
Language: C++

#include<bits/stdc++.h>

#define INF 1000000007
#define LINF 1000000000000000007

using namespace std;

typedef long long ll;
typedef pair<ll, ll> P;


int h, w, a[501][501];
vector<P> v1, v2;

int main(){
	cin >> h >> w;
	for(int i = 0; i < h; i++){
		for(int j = 0; j < w; j++){
			cin >> a[i][j];
			a[i][j] %= 2;
		}
	}
	
	for(int i = 0; i < h; i++){
		for(int j = 0; j < w; j++){
			if(!a[i][j]) continue;
			if(i < h-1 && a[i+1][j]){
				a[i][j] = 0;
				a[i+1][j] = 0;
				v1.push_back(make_pair(i,j));
				v2.push_back(make_pair(i+1,j));
			}
			else if(j < w-1 && a[i][j+1]){
				a[i][j] = 0;
				a[i][j+1] = 0;
				v1.push_back(make_pair(i,j));
				v2.push_back(make_pair(i,j+1));
			}
			else if(i < h-1){
				a[i][j] = 0;
				a[i+1][j] = 1;
				v1.push_back(make_pair(i,j));
				v2.push_back(make_pair(i+1,j));
			}
			else if(j < w-1){
				a[i][j] = 0;
				a[i][j+1] = 1;
				v1.push_back(make_pair(i,j));
				v2.push_back(make_pair(i,j+1));
			}
		}
	}
	
	cout << v1.size() << endl;
	for(int i = 0; i < v1.size(); i++){
		cout << v1[i].first+1 << " " << v1[i].second+1 << " " v2[i].first+1 << " " << v2[i].second+1 << endl;
	}
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:56:70: error: expected ';' before 'v2'
   56 |                 cout << v1[i].first+1 << " " << v1[i].second+1 << " " v2[i].first+1 << " " << v2[i].second+1 << endl;
      |                                                                      ^~~
      |                                                                      ;
Language: C++

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

struct pos {
	int h, w;
};
struct move {
	pos prev, next;
	int cnt;
};

int main()
{
	int h, w, sum = 0;
	vector<vector<int>> bord;
	cin >> h >> w;
	for (int i = 0; i < h; i++)
	{
		vector<int>w_list;
		for (int j = 0; j < w; j++)
		{
			int num;
			cin >> num;
			sum += num;
			w_list.push_back(num);
		}
		bord.push_back(w_list);
	}
	vector<struct move> move_list;

	for (int i = 1; i <= h; i++)
	{
		int cnt = 0;
		for (int j = w; j > 1; j--)
		{
			//for (int k = 0; k < bord[i - 1][j - 1]; k++)
			{
				struct move m;
				m.prev.h = i;
				m.prev.w = j;
				m.next.h = i;
				m.next.w = j - 1;
				m.cnt = bord[i - 1][j - 1];
				move_list.push_back(m);
				cnt++;
			}
		}
		if (i > 1 && cnt > 0)
		{
			struct move m;
			m.prev.h = i;
			m.prev.w = 1;
			m.next.h = i - 1;
			m.next.w = 1;
			move_list.push_back(m);
		}
	}

	if (sum % 2)
	{
		struct move m;
		m.prev.h = m.prev.w = 1;
		m.next.h = 2;
		m.next.w = 1;
		move_list.push_back(m);
	}
	cout << move_list.size() << endl;
	for (auto m : move_list)
	{
		for (int o = 0; i < m.cnt; i++)
		{
			cout << m.prev.w << ' ' << m.prev.h << ' ' << m.next.w << ' ' << m.next.h;
			cout << endl;
		}
	}

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:73:33: error: 'i' was not declared in this scope
   73 |                 for (int o = 0; i < m.cnt; i++)
      |                                 ^
Language: C

#include<stdio.h>

int main(){
	int H,W,i,j,c=0;
	
	scanf("%d%d",&H,&W);
	int ans[H*W][4];
	int a[H][W];
	for(i=0;i<H;i++){
		for(j=0;j<W;j++)scanf("%d",&a[i][j]);
	}
	
	for(i=0;i<H;i++){
		for(j=0;j<W;j++){
			if(a[i][j]%2==0)continue;
			
			if(i>0 && a[i-1][j]%2==1){
				ans[c][0]=i;
				ans[c][1]=j;
				ans[c][2]=i-1;
				ans[c][3]=j;
				c++;
				a[i][j]--;
				a[i-1][j]++;
				continue;
			}
			
			if(j<W-1){
				ans[c][0]=i;
				ans[c][1]=j;
				ans[c][2]=i;
				ans[c][3]=j+1;
				a[i][j]--;
				a[i][j+1]++;
				c++;
				continue;
			}
			
			if(i<H-1){
				ans[c][0]=i;
				ans[c][1]=j;
				ans[c][2]=i+1;
				ans[c][3]=j;
				a[i][j]--;
				a[i+1][j]++;
				c++;
				continue;
			}
			
			if()
		}
	}
	
	printf("%d\n",c);
	for(i=0;i<c;i++)printf("%d %d %d %d\n",ans[i][0]+1,ans[i][1]+1,ans[i][2]+1,ans[i][3]+1);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:50:28: error: expected expression before ')' token
   50 |                         if()
      |                            ^
Language: C++

#include<stdio.h>
#include<iostream>
#include<string>
#include<math.h>
#include<cmath>
#include<algorithm>
#include<map>
#include<queue>
#include<stack>
#include<vector>
#include<time.h>
#include<ctime>
#include<functional>
#define int long long
#define itn int
using namespace std;
#define INF (1<<29)
#define f(i,n) for(int i=0;i<(n);i++)
typedef long long ll;
ll GCD(ll a, ll b) {
	if (b == 0)return a;
	return GCD(b, a%b);
}
ll LCM(ll a, ll b) {
	return a / GCD(a, b)*b;
}
ll mypow(ll a, ll b, ll c) {
	if (b == 0)return 1;
	if (b % 2)return mypow(a, b - 1, c)*a%c;
	else return mypow(a, b / 2, c)*mypow(a, b / 2, c) % c;
}
int mutu(int w, int q) {
	int z = INF,zz;
	for (int i = 0; i < a; i++) {
		for (int j = 0; j < b; j++) {
			if ((i != w || j != q) && y[i][j]) {
				if (z > abs(i - w) + abs(j - q)) {
					z = abs(i - w) + abs(j - q);
					zz = i;
				}
			}
		}
	}
	return zz;
}
int mutuhu(int w, int q) {
	int z = INF, zz;
	for (int i = 0; i < a; i++) {
		for (int j = 0; j < b; j++) {
			if ((i != w || j != q) && y[i][j]) {
				if (z > abs(i - w) + abs(j - q)) {
					z = abs(i - w) + abs(j - q);
					zz = j;
				}
			}
		}
	}
	return zz;
}
int x[500][500];
bool y[500][500];
int a, b;
signed main() {
	int z = 0;
	cin >> a >> b;
	for (int i = 0; i < a; i++) {
		for (int j = 0; j < b; j++) {
			cin >> x[i][j];
			if (x[i][j] % 2) {
				y[i][j] = true;
			}
		}
	}
	for (int i = 0; i < a; i++) {
		for (int j = 0; j < b; j++) {
			if (y[i][j]) {
				for (int k = i; k < mutu(i, j); k++) {
					for (int l = j; l < mutuhu(i, j); l++) {
						z++;
					}
				}
			}
		}
	}
	cout << z << endl;
	for (int i = 0; i < a; i++) {
		for (int j = 0; j < b; j++) {
			if (y[i][j]) {
				for (int k = i; k < mutu(i, j); k++) {
					for (int l = j; l < mutuhu(i, j); l++) {
						cout << i << " " << j << " " << k << " " << l << endl;
					}
				}
			}
		}
	}
	return 0;
}


Compiler output:
a.cc: In function 'long long int mutu(long long int, long long int)':
a.cc:34:29: error: 'a' was not declared in this scope
   34 |         for (int i = 0; i < a; i++) {
      |                             ^
a.cc:35:37: error: 'b' was not declared in this scope
   35 |                 for (int j = 0; j < b; j++) {
      |                                     ^
a.cc:36:51: error: 'y' was not declared in this scope
   36 |                         if ((i != w || j != q) && y[i][j]) {
      |                                                   ^
a.cc: In function 'long long int mutuhu(long long int, long long int)':
a.cc:48:29: error: 'a' was not declared in this scope
   48 |         for (int i = 0; i < a; i++) {
      |                             ^
a.cc:49:37: error: 'b' was not declared in this scope
   49 |                 for (int j = 0; j < b; j++) {
      |                                     ^
a.cc:50:51: error: 'y' was not declared in this scope
   50 |                         if ((i != w || j != q) && y[i][j]) {
      |                                                   ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int H,W;
  cin>>H>>W;
  int a[H+1][W+1];
  int p = 0;
  vector <int> a(100000);
  vector <int> b(100000);
  vector <int> c(100000);
  vector <int> d(100000);
  
  for(int i = 0;i<H;i++){
    for(int k = 0;k<W;k++){
      if(a[i][k] & 2 == 1){
        if(i+1 < W && (a[i+1][k] == 0 || a[i+1][k] %2 == 1)){
          a.at(p) = i;
          b.at(p) = k;
          c.at(p) = i+1;
          d.at(p) = k;
          p++;
        }
      }
      if(a[i][k] & 2 == 1){
        if(k+1 < H && (a[i][k+1] == 0 || a[i][k+1] %2 == 1)){
          a.at(p) = i;
          b.at(p) = k;
          c.at(p) = i+1;
          d.at(p) = k;
          p++;
        }
      }
    }
  }
  cout << a.size() << endl;
  for(int i = 0;i<a.size();i++){
    cout << a.at(i) << " " << b.at(i) << " " << c.at(i) << " " << d.at(i) << endl;
  }
  return 0;
}
          
        

Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: conflicting declaration 'std::vector<int> a'
    8 |   vector <int> a(100000);
      |                ^
a.cc:6:7: note: previous declaration as 'int a [(H + 1)][(W + 1)]'
    6 |   int a[H+1][W+1];
      |       ^
a.cc:17:13: error: request for member 'at' in 'a', which is of non-class type 'int [(H + 1)][(W + 1)]'
   17 |           a.at(p) = i;
      |             ^~
a.cc:26:13: error: request for member 'at' in 'a', which is of non-class type 'int [(H + 1)][(W + 1)]'
   26 |           a.at(p) = i;
      |             ^~
a.cc:35:13: error: request for member 'size' in 'a', which is of non-class type 'int [(H + 1)][(W + 1)]'
   35 |   cout << a.size() << endl;
      |             ^~~~
a.cc:36:21: error: request for member 'size' in 'a', which is of non-class type 'int [(H + 1)][(W + 1)]'
   36 |   for(int i = 0;i<a.size();i++){
      |                     ^~~~
a.cc:37:15: error: request for member 'at' in 'a', which is of non-class type 'int [(H + 1)][(W + 1)]'
   37 |     cout << a.at(i) << " " << b.at(i) << " " << c.at(i) << " " << d.at(i) << endl;
      |               ^~
Language: C++

#include<bits/stdc++.h>
#include<windows.h>
using namespace std;
int h,w,b,ans,dx[4]={-1,0,1,0},dy[4]={0,1,0,-1};
vector<pair<int,int> > a;
int main(){
	cin >> h >> w;
	for(int i=0;i<h;i++)
		for(int j=0;j<w;j++){
			cin >> b;
			if(b%2!=0)a.push_back(make_pair(i,j));
		}
	if(a.size()%2!=0)a.pop_back();
	for(int i=0;i<a.size()-1;i+=2)
		ans+=abs(a[i].first-a[i+1].first)+abs(a[i].first-a[i+1].first);
	cout << ans << endl;
	for(int i=0;i<a.size()-1;i+=2){
		int x,y;
		if(a[i].first>a[i+1].first)x=2;
		else x=0;
		for(int j=0;j<abs(a[i].first-a[i+1].first);j++)
			cout << a[i].first+dx[x]*j+1 << " " << a[i].second+1 << " " << a[i].first+dx[x]*(j+1)+1 << " " << a[i].second+1 << endl;
		y=a[i].first+dx[x]*(abs(a[i].first-a[i+1].first)+1);
		if(a[i].second>a[i+1].second)x=3;
		else x=1;
		for(int j=0;j<abs(a[i].second-a[i+1].second);j++)
			cout << y+2 << " " << a[i].second+dy[x]*j+1 << " " << y+2 << " " << a[i].second+dy[x]*(j+1)+1 << endl;
	}
	return 0;
}

Compiler output:
a.cc:2:9: fatal error: windows.h: No such file or directory
    2 | #include<windows.h>
      |         ^~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<algorithm>
#include<string>
#include<math.h>
#include<cmath>
#include<vector>
#include<stack>
#include<queue>
#include<functional>
#include<map>
#include<set>
using namespace std;
#define rep(i,n) for(int i=0;i<(n);i++)
typedef long long ll;

ll GCD(ll a, ll b) {
	while (max(a, b) % min(a, b)) {
		if (a < b)b %= a;
		else a %= b;
	}
	return min(a, b);
}
int h, w, a[510][510], b[510][510];
bool used[510][510];
int f[] = { 0,1,0,-1 };
int g[] = { 1,0,-1,0 };
struct answer { int a,  b,  c,  d; };
answer ans[1000010];
int cnt;
int main() {
	cin >> h >> w;
	rep(i, h) {
		rep(j, w)cin >> a[i][j];
	}
	rep(i, h) {
		rep(j, w) {
			memset(b, -1, sizeof(b));
			if (used[i][j])continue;
			if (a[i][j] % 2) {
				queue<pair<int, int>> que;
				que.push({ i,j });
				b[i][j] = 0;
				used[i][j] = true;
				while (!que.empty()) {
					pair<int, int> p = que.front();
					que.pop();
					for (int k = 0; k < 4; k++) {
						int nf = p.first + f[k];
						int ng = p.second + g[k];
						if (nf < 0 || nf >= h || ng < 0 || ng >= w || used[nf][ng])continue;
						used[nf][ng] = true;
						que.push({ nf,ng });
						if (a[nf][ng] % 2) {
							if (i < nf) {
								for (int l = i; l < nf; l++) {
									ans[cnt] = { l,j,l + 1,j };
									cnt++;
								}
							}
							if (i > nf) {
								for (int l = i; l > nf; l--) {
									ans[cnt] = { l,j,l - 1,j };
									cnt++;
								}
							}
							if (j < ng) {
								for (int l = j; l < ng; l++) {
									ans[cnt] = { nf,l,nf,l + 1 };
									cnt++;
								}
							}
							if (j > ng) {
								for (int l = j; l > ng; l--) {
									ans[cnt] = { nf,l,nf,l - 1 };
									cnt++;
								}
							}
							goto kaage;
						}
					}
				}
			kaage:;
			}
		}
	}
	cout << cnt << endl;
	rep(i, cnt) {
		cout << ans[i].a + 1 << " " << ans[i].b + 1 << " " << ans[i].c + 1 << " " << ans[i].d + 1 << endl;
	}
	return 0;


}

Compiler output:
a.cc: In function 'int main()':
a.cc:37:25: error: 'memset' was not declared in this scope
   37 |                         memset(b, -1, sizeof(b));
      |                         ^~~~~~
a.cc:12:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
   11 | #include<set>
  +++ |+#include <cstring>
   12 | using namespace std;
Language: C++

#include <iostream>
#include <cstdio>
using namespace std;
int n,m,a[1001][1001];
int ans[1000001][5],tot;
int main()
{
	scanf("%d%d",&n,&m);
	for (int i=1;i<=n;++i)
		for (int j=1;j<=m;++j) scanf("%d",&a[i][j]);
	for (int i=1;i<=n;++i)
	{
		for (int j=1;j<m;++j)
			if (a[i][j]%2) a[++tot][1]=i,a[tot][2]=j,a[tot][3]=i,a[tot][4]=j+1,a[i][j+1]++;
		if (i!=n&&a[i][m]%2) a[++tot][1]=i,a[tot][2]=m,a[tot][3]=i+1,a[tot][4]=m,a[i+1][j]++;
	}
	printf("%d\n",tot);
	for (int i=1;i<=tot;++i) printf("%d %d %d %d\n",a[i][1],a[i][2],a[i][3],a[i][4]);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:97: error: 'j' was not declared in this scope
   15 |                 if (i!=n&&a[i][m]%2) a[++tot][1]=i,a[tot][2]=m,a[tot][3]=i+1,a[tot][4]=m,a[i+1][j]++;
      |                                                                                                 ^
Language: C++

/*input
1 5
9 9 9 9 9
*/
#include <bits/stdc++.h>
using namespace std;
typedef long long lol;
#define INF 0x3f3f3f3f
#define MAX 510

struct ope {
	int x1, y1, x2, y2;
};

vector<ope> ans, tmp; 
int n, m, now = 0;
int a[MAX][MAX], vis[MAX][MAX];
int bx, by;

bool dfs(int x, int y, int fa) {
	if (x < 1 || x > n || y < 1 || y > m) return false; 
	if (vis[x][y]) return false;

	if (a[x][y] % 2 && fa != 1) {
		a[x][y]++;
		vis[x][y] = 1;
		return true;
	}
	vis[x][y] = 1;
	for (int i = -1; i <= 1; i++) {
		for (int j = -1; j <= 1; j++) {
			if (dfs(x + i, y + j, 0)) {
				tmp.push_back((ope){x, y, x + i, y + j});
				return true;
			}
		}
	}
	vis[x][y] = 0;
	return false;
}

int main() {
	cin >> n >> m;
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) {
			cin >> a[i][j];
		}
	}
	for (int i = 1; i <= n; i++) {
		for (int j = 1; j <= m; j++) if (a[i][j] % 2 && !vis[i][j]) {
			if (dfs(i, j, 1)) {
				for (int x = tmp.size() - 1; x >= 0; x--) {
					ans.push_back(tmp[x]);
				}
				a[x][y]--;
			}
			tmp.clear();
		}
	}

	cout << ans.size() << '\n';
	for (auto j : ans) {
		cout << j.x1 << ' ' << j.y1 << ' ' << j.x2 << ' ' << j.y2;
		cout << '\n';
	}

	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:55:35: error: 'x' was not declared in this scope
   55 |                                 a[x][y]--;
      |                                   ^
a.cc:55:38: error: 'y' was not declared in this scope
   55 |                                 a[x][y]--;
      |                                      ^
Language: C++

#include "bits/stdc++.h"
using namespace std;
#define l_ength size
typedef long long ll;
typedef pair<int, int> P;
vector<P> v,u;

int a[555][555];

int main(void){
int h, w, i, j, n=0,x,y,p,c=0;
bool flag=false;
cin >> h >> w;
for(i=0;i<h;++i){
for(j=0;j<w;++j){
cin >> a[i][j];
c+=a[i][j]%2;
}
}
c /= 2; c *= 2;
for(i=0;i<h;++i){
for(j=0;j<w;++j){
if(i%2){ p = w-j-i; }else{ p = j; }
if(flag){
v.push_back(P(x,y));
u.push_back(P(i,p));
++n;
}
if(a[i][p]%2){
flag = (!flag);
—c;
}
if(!c){ break; }
x = i; y = p;
}
if(!c){break;}
}
cout << n << endl;
for(i=0;i<n;++i){
cout << (v[i].first+1) << " " << (v[i].second+1) << " " << (u[i].first+1) << " " <<  (u[i].second+1) << endl;
}
return 0;
}


Compiler output:
a.cc:31:1: error: extended character — is not valid in an identifier
   31 | —c;
      | ^
a.cc: In function 'int main()':
a.cc:31:1: error: '\U00002014c' was not declared in this scope
   31 | —c;
      | ^~
Language: C++

#include "bits/stdc++.h"
using namespace std;
#define l_ength size
typedef long long ll;
typedef pair<int, int> P;
vector<P> v,u;

int a[555][555];

int main(void){
int h, w, i, j, n=0,x,y,p;
bool flag=false;
cin >> h >> w;
for(i=0;i<h;++i){
for(j=0;j<w;++j){
cin >> a[i][j];
}
}
for(i=0;i<h;++i){
for(j=0;j<w;++j){
if(i%2){ p = w-j-i; }else{ p = j; }
if(flag){
v.push_back(P(x,y));
u.push_back(P(i,p));
++n;
}
if(a[i][p]%2){
flag = (!flag);
}
x = i; y = q;
}
}
cout << n << endl;
for(i=0;i<n;++i){
cout << (v[i].first+1) << " " << (v[i].second+1) << " " << (u[i].first+1) << " " <<  (u[i].second+1) << endl;
}
return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:30:12: error: 'q' was not declared in this scope
   30 | x = i; y = q;
      |            ^
Language: C++

struct x{
    int a,b,c,d;
};

 
 int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
     int h,w;cin>>h>>w;
     int a[h+1][w+1];rep(i,1,h)rep(j,1,w)cin>>a[i][j];

     vector<x>ans;
     rep(i,1,h){
         rep(j,1,w-1){
             if(a[i][j]%2==1){
                 a[i][j]--;
                 a[i][j+1]++;
                 x t;
                 t.a=i;t.b=j;t.c=i;t.d=j+1;
                 ans.pb(t);
             }
         }
     }
     rep(i,1,h-1){
         if(a[i][w]%2==1){
             a[i][w]--;
             a[i+1][w]++;
             x t;
             t.a=i;t.b=w;t.c=i+1;t.d=w;
             ans.pb(t);
         }
     }
     cout<<ans.size()<<endl;
     for(auto q:ans){
         cout<<q.a<<" "<<q.b<<" "<<q.c<<" "<<q.d<<endl;
     }
 
    return 0;
 }
 

Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: 'ios' has not been declared
    7 |     ios::sync_with_stdio(false);
      |     ^~~
a.cc:8:5: error: 'cin' was not declared in this scope
    8 |     cin.tie(0);
      |     ^~~
a.cc:10:26: error: 'i' was not declared in this scope
   10 |      int a[h+1][w+1];rep(i,1,h)rep(j,1,w)cin>>a[i][j];
      |                          ^
a.cc:10:22: error: 'rep' was not declared in this scope
   10 |      int a[h+1][w+1];rep(i,1,h)rep(j,1,w)cin>>a[i][j];
      |                      ^~~
a.cc:12:6: error: 'vector' was not declared in this scope
   12 |      vector<x>ans;
      |      ^~~~~~
a.cc:12:14: error: expected primary-expression before '>' token
   12 |      vector<x>ans;
      |              ^
a.cc:12:15: error: 'ans' was not declared in this scope
   12 |      vector<x>ans;
      |               ^~~
a.cc:33:6: error: 'cout' was not declared in this scope
   33 |      cout<<ans.size()<<endl;
      |      ^~~~
a.cc:33:24: error: 'endl' was not declared in this scope
   33 |      cout<<ans.size()<<endl;
      |                        ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
 
int b, jawaban;
 
int main(){
	cin>>b;
	jawaban=b/2;
	b=(b+1)/2;
	cout<<b*ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   10 |         cout<<b*ans<<endl;
      |                 ^~~
      |                 abs
Language: C

#include<stdio.h>
using namespace std ;
int main()
{
int a , b , c , d ;
scanf (”%d%d%d%d ” , &a , &b , &c , &d ) ;
int x = c − a , y = d − b ;
printf (”%d %d %d %d\n ” , c − y , d + x , a − y , b + x ) ;
}


Compiler output:
main.c:2:1: error: unknown type name 'using'
    2 | using namespace std ;
      | ^~~~~
main.c:2:17: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'std'
    2 | using namespace std ;
      |                 ^~~
main.c: In function 'main':
main.c:6:8: error: stray '\342' in program
    6 | scanf (<U+201D>%d%d%d%d <U+201D> , &a , &b , &c , &d ) ;
      |        ^~~~~~~~
main.c:6:9: error: expected expression before '%' token
    6 | scanf (”%d%d%d%d ” , &a , &b , &c , &d ) ;
      |         ^
main.c:6:18: error: stray '\342' in program
    6 | scanf (<U+201D>%d%d%d%d <U+201D> , &a , &b , &c , &d ) ;
      |                         ^~~~~~~~
main.c:7:11: error: stray '\342' in program
    7 | int x = c <U+2212> a , y = d <U+2212> b ;
      |           ^~~~~~~~
main.c:7:13: error: expected ',' or ';' before 'a'
    7 | int x = c − a , y = d − b ;
      |             ^
main.c:7:23: error: stray '\342' in program
    7 | int x = c <U+2212> a , y = d <U+2212> b ;
      |                              ^~~~~~~~
main.c:8:9: error: stray '\342' in program
    8 | printf (<U+201D>%d %d %d %d\n <U+201D> , c <U+2212> y , d + x , a <U+2212> y , b + x ) ;
      |         ^~~~~~~~
main.c:8:10: error: expected expression before '%' token
    8 | printf (”%d %d %d %d\n ” , c − y , d + x , a − y , b + x ) ;
      |          ^
main.c:8:21: error: stray '\' in program
    8 | printf (”%d %d %d %d\n ” , c − y , d + x , a − y , b + x ) ;
      |                     ^
main.c:8:24: error: stray '\342' in program
    8 | printf (<U+201D>%d %d %d %d\n <U+201D> , c <U+2212> y , d + x , a <U+2212> y , b + x ) ;
      |                               ^~~~~~~~
main.c:8:30: error: stray '\342' in program
    8 | printf (<U+201D>%d %d %d %d\n <U+201D> , c <U+2212> y , d + x , a <U+2212> y , b + x ) ;
      |                                            ^~~~~~~~
main.c:8:46: error: stray '\342' in program
    8 | printf (<U+201D>%d %d %d %d\n <U+201D> , c <U+2212> y , d + x , a <U+2212> y , b + x ) ;
      |                                                                   ^~~~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
signed main()
{
	ios::sync_with_stdio(0);
    cin.tie(0);
	if(n%2==0){
		cout<<n*n/4;
	}
	else{
		cout<<(n*n-1)/4;
	}
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:7:12: error: 'n' was not declared in this scope; did you mean 'yn'?
    7 |         if(n%2==0){
      |            ^
      |            yn
Language: C++

#include<iostream>
#include<algorithm>
#include<functional>
#include<cmath>
#include<string>
#include<vector>
#include<stack>
#include<queue>
#include<map>
#include<set>
#include<deque>
using namespace std;
#define ll long long
const int mod = 1000000007;
const int MOD = 998244353;
const ll INF = 1000000000000000000;


int main()
{
	int N;
	cin >> N;
	cout << (N + 1) / 2 * (N / 2) << endl;
}#include<iostream>
#include<algorithm>
#include<functional>
#include<cmath>
#include<string>
#include<vector>
#include<stack>
#include<queue>
#include<map>
#include<set>
#include<deque>
using namespace std;
#define ll long long
const int mod = 1000000007;
const int MOD = 998244353;
const ll INF = 1000000000000000000;


int main()
{
	int N;
	cin >> N;
	cout << (N + 1) / 2 * (N / 2) << endl;
}

Compiler output:
a.cc:24:2: error: stray '#' in program
   24 | }#include<iostream>
      |  ^
a.cc:24:3: error: 'include' does not name a type
   24 | }#include<iostream>
      |   ^~~~~~~
a.cc:37:11: error: redefinition of 'const int mod'
   37 | const int mod = 1000000007;
      |           ^~~
a.cc:14:11: note: 'const int mod' previously defined here
   14 | const int mod = 1000000007;
      |           ^~~
a.cc:38:11: error: redefinition of 'const int MOD'
   38 | const int MOD = 998244353;
      |           ^~~
a.cc:15:11: note: 'const int MOD' previously defined here
   15 | const int MOD = 998244353;
      |           ^~~
a.cc:39:10: error: redefinition of 'const long long int INF'
   39 | const ll INF = 1000000000000000000;
      |          ^~~
a.cc:16:10: note: 'const long long int INF' previously defined here
   16 | const ll INF = 1000000000000000000;
      |          ^~~
a.cc:42:5: error: redefinition of 'int main()'
   42 | int main()
      |     ^~~~
a.cc:19:5: note: 'int main()' previously defined here
   19 | int main()
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
    int　k;
    cin >> k;

    int count = 0;
    for(int i=1;i<k;i++){
        for(int j=i+1;j<=k;j++){
            if((i%2==0 and j%2!=0) or (i%2!=0 and j%2==0)) {
                count++;
                //cout << i << " " << j << endl;
            }
        }
    }
    
    cout << count;
}


Compiler output:
a.cc:4:5: error: extended character 　 is not valid in an identifier
    4 |     int　k;
      |     ^
a.cc: In function 'int main()':
a.cc:4:5: error: 'int\U00003000k' was not declared in this scope
    4 |     int　k;
      |     ^~~~~~
a.cc:5:12: error: 'k' was not declared in this scope
    5 |     cin >> k;
      |            ^
Language: C++

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

int main(){
  int k;
  cin>>k;
  in par = 0, imp = 0;
  for(int i = 1; i<=k; ++i){
    if(i&1) imp++;
    else par++;
  }
cout<<par*imp<<"\n";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'in' was not declared in this scope; did you mean 'yn'?
    7 |   in par = 0, imp = 0;
      |   ^~
      |   yn
a.cc:9:13: error: 'imp' was not declared in this scope
    9 |     if(i&1) imp++;
      |             ^~~
a.cc:10:10: error: 'par' was not declared in this scope; did you mean '__pstl::execution::v1::par'?
   10 |     else par++;
      |          ^~~
      |          __pstl::execution::v1::par
In file included from /usr/include/c++/14/pstl/glue_algorithm_defs.h:15,
                 from /usr/include/c++/14/algorithm:86,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/pstl/execution_defs.h:43:45: note: '__pstl::execution::v1::par' declared here
   43 | _GLIBCXX17_INLINE constexpr parallel_policy par{};
      |                                             ^~~
a.cc:12:7: error: 'par' was not declared in this scope; did you mean '__pstl::execution::v1::par'?
   12 | cout<<par*imp<<"\n";
      |       ^~~
      |       __pstl::execution::v1::par
/usr/include/c++/14/pstl/execution_defs.h:43:45: note: '__pstl::execution::v1::par' declared here
   43 | _GLIBCXX17_INLINE constexpr parallel_policy par{};
      |                                             ^~~
a.cc:12:11: error: 'imp' was not declared in this scope
   12 | cout<<par*imp<<"\n";
      |           ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll =long long;
#define all(v) v.begin(),v.end()
 
int main() {
  ll K;
  cin>>K;
  if(K%2==0) {
cout<<(K/2)*(K/2)<<enl;
  }
  else {
cout<<(K/2+1)*(K/2)<<endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:20: error: 'enl' was not declared in this scope; did you mean 'ynl'?
   10 | cout<<(K/2)*(K/2)<<enl;
      |                    ^~~
      |                    ynl
Language: C++

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

int main(){
  int k;
  cin >> k;
  cout << (k/2) * (k+1) / 2 << endl;
  return 0;
}

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

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

int main() {
  if(K%2==1){
    cout<<(K/2)*((K/2)+1)<<endl;
  }
  else{
    cout<<K/2*K/2<<endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:6: error: 'K' was not declared in this scope
    5 |   if(K%2==1){
      |      ^
Language: Java

import java.util.Scanner;

public class Pair {

	public static void main(String[] args) {
		Scanner scan= new Scanner(System.in);
		int n=scan.nextInt();
		if(n%2==0) {
			n/=2;
			System.out.println(n*n);
		}
		else {
			int a=n/2;
			System.out.println((a*a)+(n/2));
		}

	}

}


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

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

int main() {
  int K;
  cin >> K;
  if (K%2==0) {
    cout << (K*K)/4 << emdl;
  }
  else {
    cout << (K*(K+1))/4 << endl;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:24: error: 'emdl' was not declared in this scope
   11 |     cout << (K*K)/4 << emdl;
      |                        ^~~~
Language: Java

import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int ans = Math.pow((int)(n/2), 2);
    System.out.println(n%2 == 0 ? ans : ans+(n/2));
  }
}


Compiler output:
Main.java:7: error: incompatible types: possible lossy conversion from double to int
    int ans = Math.pow((int)(n/2), 2);
                      ^
1 error
Language: Java

import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int ans = Math.pow(n/2, 2);
    System.out.println(n%2 == 0 ? ans : ans+(n/2));
  }
}

Compiler output:
Main.java:7: error: incompatible types: possible lossy conversion from double to int
    int ans = Math.pow(n/2, 2);
                      ^
1 error
Language: Java


import java.util.Scanner;

public class Practice_A {

	public static void main(String[] args) {


		Scanner scanner=new Scanner(System.in);
		int K=scanner.nextInt();
		int kosuu=((K/2)*((K+1)/2));

		System.out.println(kosuu);
	}

}


Compiler output:
Main.java:4: error: class Practice_A is public, should be declared in a file named Practice_A.java
public class Practice_A {
       ^
1 error
Language: C++

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

int main() {
int k;
cin >> k;
int a;
a = (k + 1)2;
cout << a* (k-a) << endl;
}
  


Compiler output:
a.cc: In function 'int main()':
a.cc:10:12: error: expected ';' before numeric constant
   10 | a = (k + 1)2;
      |            ^
      |            ;