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

#include<bits/stdc++.h>
#include<unordered_set>
#include<unordered_map>
#include <iostream>
#include <string>
#include <cmath>
using namespace std;
#define ll long long
#define rep(i, n) for (ll i = 0; i < (n); i++)
#define FOR(i,a,b) for(ll i=(a);i<(b);i++)
#define FORR(i,a,b)for(ll i=(a);i<=(b);i++)
#define repR(i,n) for(ll i=n;i>=0;i--)
#define all(v)(v).begin(),(v).end()
#define rall(v)(v).rbegin(),(v).rend()
#define F first
#define S second
#define pb push_back
#define pu push
#define COUT(x) cout<<(x)<<endl
#define PQ priority_queue<ll>
#define PQR priority_queue<ll,vector<ll>,greater<ll>>
#define YES(n) cout << ((n) ? "YES" : "NO"  ) << endl
#define Yes(n) cout << ((n) ? "Yes" : "No"  ) << endl
#define mp make_pair
#define maxs(x,y) (x = max(x,y))
#define mins(x,y) (x = min(x,y))
#define sz(x) (int)(x).size()
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll MOD = 1000000007LL;
const ll INF = 1LL << 60;
using vll = vector<ll>;
using vb = vector<bool>;
using vvb = vector<vb>;
using vvll = vector<vll>;
using vstr = vector<string>;
using pll = pair<ll, ll>;
using vc = vector<char>;
using vvc = vector<vc>;
ll dx[4]={0,1,0,-1};
ll dy[4]={1,0,-1,0};
int main(){
  ll h,w;
  cin>>h>>w;
  vvll a(h,vll(w));
  rep(i,h)rep(j,w) {
    cin>>a[i][j];
  }
  ll i=0;
  ll j=0;
  ll ans=0;
  ll kh,kw;
  if(h%2==0){
    kh=1;kw==w;
  }
  else{
    kh=h;
    kw=w;
  }
  ll cu=0;
  while(!(i==kh-1&&j==kw-1)){
    if(j==w-1||j==0){
      cu++;
      i--;
      if(a[i+1][j]%2==1){
        ans++;
      }
    }
    else if(cu%2==0){
      j++;
      if(a[i][j-1]%2==1){
        ans++;
      }
    }
    else{
      j--;
      if(a[i][j+1]%2==1){
        ans++;
      }
    }
  }
  COUT(ans);
  while(!(i==kh-1&&j==kw-1)){
    if(j==w-1||j==0){
      cu++;
      i--;
      if(a[i+1][j]%2==1){
        a[i][j]++;
        cout<<i+1<<" "<<j<<" "<<i<<" "<<j<<endl;
      }
    }
    else if(cu%2==0){
      j++;
      if(a[i][j-1]%2==1){
        a[i][j]++;
        cout<<i<<" "<<j-1<<" "<<i<<" "<<j<<endl;
      }
    }
    else{
      j--;
      if(a[i][j+1]%2==1){
        a[i][j]++;
        cout<<i<<" "<<j+1<<" "i<<" "<<j<<endl;
      }
    }
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:103:28: error: unable to find string literal operator 'operator""i' with 'const char [2]', 'long unsigned int' arguments
  103 |         cout<<i<<" "<<j+1<<" "i<<" "<<j<<endl;
      |                            ^~~~
Language: C++

#include<bits/stdc++.h>
#include<unordered_set>
#include<unordered_map>
#include <iostream>
#include <string>
#include <cmath>
using namespace std;
#define ll long long
#define rep(i, n) for (ll i = 0; i < (n); i++)
#define FOR(i,a,b) for(ll i=(a);i<(b);i++)
#define FORR(i,a,b)for(ll i=(a);i<=(b);i++)
#define repR(i,n) for(ll i=n;i>=0;i--)
#define all(v)(v).begin(),(v).end()
#define rall(v)(v).rbegin(),(v).rend()
#define F first
#define S second
#define pb push_back
#define pu push
#define COUT(x) cout<<(x)<<endl
#define PQ priority_queue<ll>
#define PQR priority_queue<ll,vector<ll>,greater<ll>>
#define YES(n) cout << ((n) ? "YES" : "NO"  ) << endl
#define Yes(n) cout << ((n) ? "Yes" : "No"  ) << endl
#define mp make_pair
#define maxs(x,y) (x = max(x,y))
#define mins(x,y) (x = min(x,y))
#define sz(x) (int)(x).size()
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll MOD = 1000000007LL;
const ll INF = 1LL << 60;
using vll = vector<ll>;
using vb = vector<bool>;
using vvb = vector<vb>;
using vvll = vector<vll>;
using vstr = vector<string>;
using pll = pair<ll, ll>;
using vc = vector<char>;
using vvc = vector<vc>;
ll dx[4]={0,1,0,-1};
ll dy[4]={1,0,-1,0};
int main(){
  ll h,w;
  cin>>h>>w;
  vvll a(h,vll(w));
  rep(i,h)rep(j,w) {
    cin>>a[i][j];
  }
  ll i=0;
  ll j=0;
  ll ans=0;
  ll kh,kw;
  if(h%2==0){
    kh=1;kw==w;
  }
  else{
    kh=h;
    kw=w;
  }
  ll cu=0;
  while(!(i==kh-1&&j==kw-1)){
    if(j==w-1||j==0){
      cu++;
      i--;
      if(a[i+1][j]%2==1){
        ans++;
      }
    }
    else if(cu%2==0){
      j++;
      if(a[i][j-1]%2==1){
        ans++;
      }
    }
    else{
      j--;
      if(a[i][j+1]%2==1){
        ans++;
      }
    }
  }
  COUT(ans);
  while(!(i==kh-1&&j==kw-1)){
    if(j==w-1||j==0){
      cu++;
      i--;
      if(a[i+1][j]%2==1){
        a[i][j]++;
        cout<<i+1<<" "<<j<<" "<<i<<" "<<j<<endl;
      }
    }
    else if(cu%2==0){
      j++;
      if(a[i][j-1]%2==1){
        a[i][j]++;
        cout<<i<<" "<<j-1<<" "<<i<<" "<<j<<endl;
      }
    }
    else{
      j--;
      if(a[i][j+1]%2==1){
        a[i][j]++;
        cout<<i<<" "<<j+1<<" "i<<" "j<<endl;
      }
    }
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:103:28: error: unable to find string literal operator 'operator""i' with 'const char [2]', 'long unsigned int' arguments
  103 |         cout<<i<<" "<<j+1<<" "i<<" "j<<endl;
      |                            ^~~~
a.cc:103:34: error: unable to find string literal operator 'operator""j' with 'const char [2]', 'long unsigned int' arguments
  103 |         cout<<i<<" "<<j+1<<" "i<<" "j<<endl;
      |                                  ^~~~
Language: C++

#include <iostream>
#include <algorithm>
#include <utility>
#include <queue>
#include <vector>
#include <map>
#include <cstring>
#include <set>
using namespace std;

typedef long long ll;

int h, w, a[505][505];
vector<pair<pair<int, int>, pair<int, int>>> r;

int main()
{
    cin >> 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)
                continue;
            int dx[] = {-1, 0, 0, 1},
                dy[] = {0, 1, -1, 0}, f = 0;
            for (int k = 0; k < 4; ++k)
            {
                int xx = j + dx[k],
                    yy = i + dy[k];
                if (0 <= xx && xx < w && 0 <= yy && yy < h && a[yy][xx] % 2 == 1)
                {
                    ++a[yy][xx];
                    --a[i][j];
                    f = 1;
                    r.push_back({{j, i}, {xx, yy}});
                    break;
                }
            }
            if (!f)
            {
                int xx = j + (i == h - 1),
                    yy = i + (i != h - 1);
                if (0 <= xx && xx < w && 0 <= yy && yy < h)
                {
                    ++a[yy][xx];
                    --a[i][j];
                    r.push_back({{j, i}, {xx, yy}});
                }
            }
        }
    }
    cout << r.size() << endl;
    for (auto a : r)
        cout << a.first.first + 1 << " " << a.first.second + 1 << " " << b.second.first + 1 << " " << b.second.second + 1 << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:58:74: error: 'b' was not declared in this scope
   58 |         cout << a.first.first + 1 << " " << a.first.second + 1 << " " << b.second.first + 1 << " " << b.second.second + 1 << endl;
      |                                                                          ^
Language: C

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

const int MAX_HW = 505;
int A[MAX_HW][MAX_HW];
int H, W;

int res[MAX_HW*MAX_HW][4];

int main()
{
    scanf("%d %d", &H, &W);
    for(int i = 0; i < H; ++i) for(int j = 0; j < W; ++j) scanf("%d", &A[i][j]);

    int N = 0;
    for(int i = 0; i < H-1; ++i) for(int j = 0; j < W; ++j) {
        if(A[i][j]%2) {
            ++A[i+1][j]; --A[i][j];
            res[N][0] = i+1, res[N][1] = j+1, res[N][2] = i+2, res[N][3] = j+1;
            ++N;
        }
    }
    for(int j = 0; j < W-1; ++j) {
        if(A[H-1][j]%2) {
            ++A[H-1][j+1]; --A[H-1][j];
            res[N][0] = H, res[N][1] = j+1, res[N][2] = H, res[N][3] = j+2;
            ++N;
        }
    }
    printf("%d\n", N);
    for(int i = 0; i < N; ++i){
        for(int j = 0; j < 4; ++j) printf("%d ", res[i][j]);
        printf("\n");
    }
    /*
    printf("\n");
    for(int i = 0; i < H; ++i) {
        for(int j = 0; j < W; ++j) printf("%d ", A[i][j]);
        printf("\n");
    }
    */
    return 0;
}

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

#include<iostream>
#include<vector>
#include<tuple>

using namespace std;

int main(){
  int H, W;
  int a[500][500];
  vector< tuple<int, int, int, int> > route;
  
  cin >> 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 - 1;j++){
      if(a[i][j] % 2){
        route.push_back(make_tuple(i, j, i, j + 1));
        a[i][j + 1]++;
      }
    }
  }
  for(int i = 0;i < H - 1;i++){
    if(a[i][W - 1] % 2){
      route.push_back(make_tuple(i, W - 1, i + 1, W - 1,));
      a[i + 1][W - 1]++;
    }
  }
  
  cout << route.size() << endl;
  for(int i = 0;i < route.size();i++){
    int x, y, v, w;
    tie(y, x, w, v) = route[i];
    cout << ++y << ' ' << ++x << ' ' << ++w << ' ' << ++v << endl;
  }
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:57: error: expected primary-expression before ')' token
   29 |       route.push_back(make_tuple(i, W - 1, i + 1, W - 1,));
      |                                                         ^
Language: C++

#include<iostream>
#include<vector>
#include<tuple>

using namespace std;

int main(){
  int H, W;
  int a[500][500];
  vector< tuple<int, int, int, int> > route;
  
  cin >> 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 - 1;j++){
      if(a[i][j] % 2){
        route.push_back(make_tuple(j, i, j + 1, i));
        a[i][j]--;
        a[i][j + 1]++;
      }
    }
  }
  for(int i = 0;i < H - 1;i++){
    if(a[i][W - 1] % 2){
      route.push_back(make_tuple(W - 1, i, W - 1, i + 1));
      a[i][j]--;
      a[i + 1][W - 1]++;
    }
  }
  
  cout << route.size() << endl;
  for(int i = 0;i < route.size();i++){
    int x, y, v, w;
    tie(x, y, v, w) = route[i];
    cout << ++x << ' ' << ++y << ' ' << ++v << ' ' << ++w << endl;
  }
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:31:12: error: 'j' was not declared in this scope
   31 |       a[i][j]--;
      |            ^
Language: C++

using namespace std;
typedef long long ll;

// 上端から順に貪欲で処理
// 左から順番にみていって、奇数が2つ出てきたら、その2つの間を移動させる
// 奇数が余れば、一つ下の行に奇数を移動させる。移動先の偶奇を反転させる
// 最終行ならもう下がないので、移動はさせない

int ans[510*510][4];

int main() {
  int H,W;
  cin >> H >> W;
  vector< vector< int > > a( H, (vector<int>)(W) );
  REP(y,H) {
    REP(x,W) {
      cin >> a[y][x];
      a[y][x] = a[y][x] % 2;
    }
  }
  int n = 0;
  REP(y,H) {
    int pre_o = -1;
    REP(x,W) {
      if ( a[y][x] == 1 ) {
        if (pre_o != -1) {
          for( int i=pre_o; i<x; i++ ) {
            ans[n][0] = y;
            ans[n][1] = i;
            ans[n][2] = y;
            ans[n][3] = i+1;
            n++;
          }
          pre_o = -1;
        } else {
          pre_o = x;
        }
      }
    }
    if ((pre_o != -1) && (y!=H-1)) {
      ans[n][0] = y;
      ans[n][1] = pre_o;
      ans[n][2] = y+1;
      ans[n][3] = pre_o;
      n++;
      a[y+1][pre_o] = (a[y+1][pre_o]==0) ? 1 : 0;
    }
  }
  cout << n << endl;
  REP(i,n) {
    cout << (ans[i][0]+1) << " " << (ans[i][1]+1) << " " << (ans[i][2]+1) << " " << (ans[i][3]+1) << endl;
  }
}



Compiler output:
a.cc: In function 'int main()':
a.cc:13:3: error: 'cin' was not declared in this scope
   13 |   cin >> H >> W;
      |   ^~~
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:14:3: error: 'vector' was not declared in this scope
   14 |   vector< vector< int > > a( H, (vector<int>)(W) );
      |   ^~~~~~
a.cc:1:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
  +++ |+#include <vector>
    1 | using namespace std;
a.cc:14:19: error: expected primary-expression before 'int'
   14 |   vector< vector< int > > a( H, (vector<int>)(W) );
      |                   ^~~
a.cc:15:7: error: 'y' was not declared in this scope
   15 |   REP(y,H) {
      |       ^
a.cc:15:3: error: 'REP' was not declared in this scope
   15 |   REP(y,H) {
      |   ^~~
a.cc:49:3: error: 'cout' was not declared in this scope
   49 |   cout << n << endl;
      |   ^~~~
a.cc:49:3: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:49:16: error: 'endl' was not declared in this scope
   49 |   cout << n << 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;
a.cc:50:7: error: 'i' was not declared in this scope
   50 |   REP(i,n) {
      |       ^
Language: C

#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <limits.h>
#include <math.h>
int acs(const void *a, const void *b){return *(int*)a - *(int*)b;} /* 1,2,3,4.. */
int des(const void *a, const void *b){return *(int*)b - *(int*)a;} /* 8,7,6,5.. */
int cmp_char(const void *a, const void *b){return *(char*)a - *(char*)b;} /* a,b,c,d.. */
int cmp_str(const void *a, const void *b){return strcmp(*(const char **)a, *(const char **)b);} /* aaa,aab.. */
#define min(a,b) (a < b ? a: b)
#define max(a,b) (a > b ? a: b)
#define rep(i, l, r) for (int i = l; i < r; i++)
#define MAX 250001
#define MOD 1000000007

typedef long long int lli;

int main(void) {
  int H, W;
  scanf("%d %d", &H, &W);

  int a[501][501];
  rep(hi, 0, H) {
    rep(wi, 0, W) {
      scanf("%d", &a[hi][wi]);
    }
  }

  int x[MAX], y[MAX] xp[MAX], yp[MAX];
  int n = 0;
  rep(yi, 0, H) {
    rep(xi, 0, W) {
      if (xi < W - 1) {
        if (a[yi][xi] % 2 == 0) continue;
        a[yi][xi + 1]++;
        x[n] = xi + 1; y[n] = yi + 1;
        xp[n] = x[n] + 1; yp[n] = y[n];
        n++;
      } else {
        if (yi == H - 1) continue;
        if (a[yi][xi] % 2 == 0) continue;
        a[yi + 1][xi]++;
        x[n] = xi + 1; y[n] = yi + 1;
        xp[n] = x[n]; yp[n] = y[n] + 1;
        n++;
      }
    }
  }

  printf("%d\n", n);
  rep(i, 0, n) {
    printf("%d %d %d %d\n", y[i], x[i], yp[i], yp[i]);
  }
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:31:22: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'xp'
   31 |   int x[MAX], y[MAX] xp[MAX], yp[MAX];
      |                      ^~
main.c:38:24: error: 'y' undeclared (first use in this function); did you mean 'yi'?
   38 |         x[n] = xi + 1; y[n] = yi + 1;
      |                        ^
      |                        yi
main.c:38:24: note: each undeclared identifier is reported only once for each function it appears in
main.c:39:9: error: 'xp' undeclared (first use in this function); did you mean 'xi'?
   39 |         xp[n] = x[n] + 1; yp[n] = y[n];
      |         ^~
      |         xi
main.c:39:27: error: 'yp' undeclared (first use in this function); did you mean 'yi'?
   39 |         xp[n] = x[n] + 1; yp[n] = y[n];
      |                           ^~
      |                           yi
Language: C++

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

typedef pair<int,int> pint;

typedef pair<pint,pint> ppint;

int main() {
    int H, W;
    cin >> H >> W;
    int a[510][510]={0};
  
    int odd = 0;
  
    for (int i = 0; i < H; ++i) for (int j = 0; j < W; ++j) {
        cin >> a[i][j];
      
        if (a[i][j] & 1) ++odd;
    }
    
    vector<pair<pair<int,int>,pair<int,int>>> res;
  
    int num = 0;
  
    int x = 0, y = 0;
    for (int i = 0; i < W*H; ++i) {
      //一筆書き
        if (a[x][y] & 1) ++num;
            
        int ax = x, ay = y;
      
        if (x % 2 == 0) {
          
            if (ay == W-1) ++ax;
            else ++ay;
        }
        else {
            if (ny == 0) ++ax;
            else --ay;
        }
      
        if (num & 1) if (num < odd) res.push_back(pair<pair<int,int>,pair<int,int>>(pair<int,int>(x, y), pair<int,int>(nx, ny)));
        x = nx, y = ny;
    }
        
    cout << res.size() << endl;
    for (auto p : res) {
        cout << p.first.first+1 << " " << p.first.second+1 << " " << p.second.first+1 << " " << p.second.second+1 << endl;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:39:17: error: 'ny' was not declared in this scope; did you mean 'ay'?
   39 |             if (ny == 0) ++ax;
      |                 ^~
      |                 ay
a.cc:43:120: error: 'nx' was not declared in this scope; did you mean 'ax'?
   43 |         if (num & 1) if (num < odd) res.push_back(pair<pair<int,int>,pair<int,int>>(pair<int,int>(x, y), pair<int,int>(nx, ny)));
      |                                                                                                                        ^~
      |                                                                                                                        ax
a.cc:43:124: error: 'ny' was not declared in this scope; did you mean 'ay'?
   43 |         if (num & 1) if (num < odd) res.push_back(pair<pair<int,int>,pair<int,int>>(pair<int,int>(x, y), pair<int,int>(nx, ny)));
      |                                                                                                                            ^~
      |                                                                                                                            ay
a.cc:44:13: error: 'nx' was not declared in this scope; did you mean 'ax'?
   44 |         x = nx, y = ny;
      |             ^~
      |             ax
a.cc:44:21: error: 'ny' was not declared in this scope; did you mean 'ay'?
   44 |         x = nx, y = ny;
      |                     ^~
      |                     ay
Language: C++

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

int main(){
    int h, w, i, j, c = 0, flag = 0, sum = 0;
    cin >> h >> w;
    int a[h][w] = {};
    for(i=0; i<h; i++){
        for(j=0; j<w; j++){
            cin >> a[i][j];
            if(flag == 1) c++;
            if(a[i][j]%2 == 1){
                if(flag == 0){
                    flag = 1;
                }else{
                    sum += c
                    c = 0;
                    flag = 0;
                }
            }
        }
    }

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

    for(i=0; i<h; i++){
        if(i%2 == 0){
            for(j=0; j<w; j++){
                if(i==h-1 && j==w-1){
                    continue;
                }
                if(a[i][j]%2 == 1){
                    a[i][j]--;
                    if(j == w-1){
                        printf("%d %d %d %d\n", i+1, j+1, i+2, j+1);
                        a[i+1][j]++;
                    }else{
                        printf("%d %d %d %d\n", i+1, j+1, i+1, j+2);
                        a[i][j+1]++;
                    } 
                }
            }
        }else{
            for(j=w-1; j>=0; j--){
                if(i==h-1 && j==0){
                    continue;
                }
                if(a[i][j]%2 == 1){
                    a[i][j]--;
                    if(j == 0){
                        printf("%d %d %d %d\n", i+1, j+1, i+2, j+1);
                        a[i+1][j]++;
                    }else{
                        printf("%d %d %d %d\n", i+1, j+1, i+1, j);
                        a[i][j-1]++;
                    } 
                }
            }
        }
    }
 
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:29: error: expected ';' before 'c'
   16 |                     sum += c
      |                             ^
      |                             ;
   17 |                     c = 0;
      |                     ~
Language: C++

#include<bits/stdc++.h>

using namespace std;

int main(){
  int h, w;
  cin >> h >> w;
  
  vector<vector<int>> a(h, vector<int>(w, 0));
  for(int i = 0; i < h; i++){
    bool o = false;
    for(int j = 0; j < w; j++){
      int in;
      cin >> in;
      if((in & 1) == 1){
        a[i][j] = o ? -1 : 1;
        o = o ? false : true;
      }
    }
    for(int j = 1; j < w; j++){
      a[i][j] += a[i][j - 1];
    }
  }
  
  vector<pair<int, int>> man;
  for(int i = 0; i < h; i++){
    for(int j = 0; j < w - 1; j++){
      if(a[i][j] == 1){
        man.push_back(make_pair(i + 1, j + 1));
      }
    }
  }
  
  vector<int> man2;
  bool o = false;
  for(int i = 0; i < h - 1; i++){
    if(a[i][w - 1] == 1){
      if(!o){
        man2.push_back(i + 1);
        o = true;
      }else{
        o = false;
      }
    }
  }
  
  cout << man.size() + man2.size() << endl;
  for(int i = 0; i < (int)man.size(); i++){
    int y = man[i].first;
    int x = man[i].second;
    
    cout << y << ' ' << x << ' ' << y << ' ' << x + 1 << endl;
  }
  
  for(int i = 0; i < (int)man2.size(); i++){
    int y = man2[i];
    
    cout << y << ' ' << w << ' ' << y + 1 << ' ' << w << endl;
  }
  
  return 0;
}#include<bits/stdc++.h>

using namespace std;

int main(){
  int h, w;
  cin >> h >> w;
  
  vector<vector<int>> a(h, vector<int>(w, 0));
  for(int i = 0; i < h; i++){
    bool o = false;
    for(int j = 0; j < w; j++){
      int in;
      cin >> in;
      if((in & 1) == 1){
        a[i][j] = o ? -1 : 1;
        o = o ? false : true;
      }
    }
    for(int j = 1; j < w; j++){
      a[i][j] += a[i][j - 1];
    }
  }
  
  vector<pair<int, int>> man;
  for(int i = 0; i < h; i++){
    for(int j = 0; j < w - 1; j++){
      if(a[i][j] == 1){
        man.push_back(make_pair(i + 1, j + 1));
      }
    }
  }
  
  vector<int> man2;
  bool o = false;
  for(int i = 0; i < h - 1; i++){
    if(a[i][w - 1] == 1){
      if(!o){
        man2.push_back(i + 1);
        o = true;
      }else{
        o = false;
      }
    }
  }
  
  cout << man.size() + man2.size() << endl;
  for(int i = 0; i < (int)man.size(); i++){
    int y = man[i].first;
    int x = man[i].second;
    
    cout << y << ' ' << x << ' ' << y << ' ' << x + 1 << endl;
  }
  
  for(int i = 0; i < (int)man2.size(); i++){
    int y = man2[i];
    
    cout << y << ' ' << w << ' ' << y + 1 << ' ' << w << endl;
  }
  
  return 0;
}

Compiler output:
a.cc:62:2: error: stray '#' in program
   62 | }#include<bits/stdc++.h>
      |  ^
a.cc:62:3: error: 'include' does not name a type
   62 | }#include<bits/stdc++.h>
      |   ^~~~~~~
a.cc:66:5: error: redefinition of 'int main()'
   66 | int main(){
      |     ^~~~
a.cc:5:5: note: 'int main()' previously defined here
    5 | int main(){
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
#define int long long
#define rep(i,n) for(int i=0;i<n;++i)
#define all(a) a.begin(),a.end()
#define P pair<long long,long long>
#define double long double
using namespace std;
signed main(){
  int a,b;
  cin>>a>>b;
  int c[550][550];
  rep(i,b){
    rep(j,a){
      cin>>c[j][i];
      c[i][j]%=2;
    }
  }
  rep(i,b){
    rep(j,a){
      if(c[i][j]==1)
        rep(k,b){
        rep(l,a){
          if(c[i][j]==c[k][l]&&k==i&&l==j){
            c[i][j]-=1;c[k][l]+=1;
            i=m;j=n;k=o;l=p;
            rep(q,10000)
              if(k<m){
            cout<<m<<n<<m<<n-1;
                n--;
              }
              if(m<k){
                cout<<m<<n<<m<<n+1;
                n++;
              }
              if(m=k){
                cout<<m<<n<<m+1<<n;
                m++;
              }
                if(m==k&&n==p)
                  break;
          } 
        }
      }  
    }
  }



Compiler output:
a.cc: In function 'int main()':
a.cc:25:15: error: 'm' was not declared in this scope
   25 |             i=m;j=n;k=o;l=p;
      |               ^
a.cc:25:19: error: 'n' was not declared in this scope
   25 |             i=m;j=n;k=o;l=p;
      |                   ^
a.cc:25:23: error: 'o' was not declared in this scope
   25 |             i=m;j=n;k=o;l=p;
      |                       ^
a.cc:25:27: error: 'p' was not declared in this scope
   25 |             i=m;j=n;k=o;l=p;
      |                           ^
a.cc:45:4: error: expected '}' at end of input
   45 |   }
      |    ^
a.cc:8:14: note: to match this '{'
    8 | signed main(){
      |              ^
Language: C++

#include <bits/stdc++.h>
#define int long long
#define rep(i,n) for(int i=0;i<n;++i)
#define all(a) a.begin(),a.end()
#define P pair<long long,long long>
#define double long double
using namespace std;
signed main(){
  int a,b;
  cin>>a>>b;
  int c[550][550];
  rep(i,b){
    rep(j,a){
      cin>>c[j][i];
      c[i][j]%=2;
    }
  }
  rep(i,b){
    rep(j,a){
      if(c[i][j]==1)
        rep(k,b){
        rep(l,a){
          if(c[i][j]==c[k][l]&&k==i&&l==j){
            c[i][j]-=1;c[k][l]+=1;
            i=m;j=n;k=o;l=p;
            rep(q,10000)
              if(k<m){
            cout<<m<<n<<m<<n-1;
                n--;
              }
              if(m<k){
                cout<<m<<n<<m<<n+1;
                n++;
              }
              if(m=k){
                cout<<m<<n<<m+1<<n;
                m++;
              }
                if(m==k&&n==p)
                  break;
          } 
        }
      }  
    }
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:15: error: 'm' was not declared in this scope
   25 |             i=m;j=n;k=o;l=p;
      |               ^
a.cc:25:19: error: 'n' was not declared in this scope
   25 |             i=m;j=n;k=o;l=p;
      |                   ^
a.cc:25:23: error: 'o' was not declared in this scope
   25 |             i=m;j=n;k=o;l=p;
      |                       ^
a.cc:25:27: error: 'p' was not declared in this scope
   25 |             i=m;j=n;k=o;l=p;
      |                           ^
Language: C++

#include <bits/stdc++.h>
#define int long long
#define rep(i,n) for(int i=0;i<n;++i)
#define all(a) a.begin(),a.end()
#define P pair<long long,long long>
#define double long double
using namespace std;
//桁
int kt(int a){
  double b=a;
  b=log10(b);
  int c=b;
  return c+1;
 }
int lcm(int a,int b){
  int d=a,e=b,f;
  if(a<b)
    swap(a,b);
  int c,m=1;
  while(m){
    c=a%b;
    if(c==0){
       f=b;
      m--;
    }
    else{
      a=b;
      b=c;
 }
  }
  return d*e/f;
    }
  int gcm(int a,int b){
      int d=a,e=b,f;
  if(a<b)
    swap(a,b);
  int c,m=1;
  while(m){
    c=a%b;
    if(c==0){
       f=b;
      m--;
    }
    else{
      a=b;
      b=c;
 }
  }
  return f;
  }

            }
     
signed main(){
  int a,b;
  cin>>a>>b;
  int c[550][550];
  rep(i,b){
    rep(j,a){
      cin>>c[j][i];
      c[i][j]%=2;
    }
  }
  rep(i,b){
    rep(j,a){
      if(c[i][j]==1)
        rep(k,b){
        rep(l,a){
          if(c[i][j]==c[k][l]&&k==i&&l==j){
            c[i][j]-=1;c[k][l]+=1;
            i=m;j=n;k=o;l=p;
            rep(q,10000)
              if(k<m){
            cout<<m<<n<<m<<n-1;
                n--;
              }
              if(m<k){
                cout<<m<<n<<m<<n+1;
                n++;
              }
              if(m=k){
                cout<<m<<n<<m+1<<n;
                m++;
              }
                if(m==k&&n==p)
                  break;
          } 
        }
      }  
    }
  }



Compiler output:
a.cc:52:13: error: expected declaration before '}' token
   52 |             }
      |             ^
a.cc: In function 'int main()':
a.cc:71:15: error: 'm' was not declared in this scope
   71 |             i=m;j=n;k=o;l=p;
      |               ^
a.cc:71:19: error: 'n' was not declared in this scope
   71 |             i=m;j=n;k=o;l=p;
      |                   ^
a.cc:71:23: error: 'o' was not declared in this scope
   71 |             i=m;j=n;k=o;l=p;
      |                       ^
a.cc:71:27: error: 'p' was not declared in this scope
   71 |             i=m;j=n;k=o;l=p;
      |                           ^
a.cc:91:4: error: expected '}' at end of input
   91 |   }
      |    ^
a.cc:54:14: note: to match this '{'
   54 | signed main(){
      |              ^
Language: C++

#include <bits/stdc++.h>
#define int long long
#define rep(i,n) for(int i=0;i<n;++i)
#define all(a) a.begin(),a.end()
#define P pair<long long,long long>
#define double long double
using namespace std;
//桁
int kt(int a){
  double b=a;
  b=log10(b);
  int c=b;
  return c+1;
 }
int lcm(int a,int b){
  int d=a,e=b,f;
  if(a<b)
    swap(a,b);
  int c,m=1;
  while(m){
    c=a%b;
    if(c==0){
       f=b;
      m--;
    }
    else{
      a=b;
      b=c;
 }
  }
  return d*e/f;
    }
  int gcm(int a,int b){
      int d=a,e=b,f;
  if(a<b)
    swap(a,b);
  int c,m=1;
  while(m){
    c=a%b;
    if(c==0){
       f=b;
      m--;
    }
    else{
      a=b;
      b=c;
 }
  }
  return f;
  }

  
     
signed main(){
  int a,b;
  cin>>a>>b;
  int c[550][550];
  rep(i,b){
    rep(j,a){
      cin>>c[j][i];
      c[i][j]%=2;
    }
  }
  rep(i,b){
    rep(j,a){
      if(c[i][j]==1)
        rep(k,b){
        rep(l,a){
          if(c[i][j]==c[k][l]&&k==i&&l==j){
            c[i][j]-=1;c[k][l]+=1;
            i=m;j=n;k=o;l=p;
            rep(q,10000)
              if(k<m){
            cout<<m<<n<<m<<n-1;
                n--;
              }
              if(m<k){
                cout<<m<<n<<m<<n+1;
                n++;
              }
              if(m=k){
                cout<<m<<n<<m+1<<n;
                m++;
              }
                if(m==k&&n==p)
                  break;
          } 
        }
      }  
    }
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:71:15: error: 'm' was not declared in this scope
   71 |             i=m;j=n;k=o;l=p;
      |               ^
a.cc:71:19: error: 'n' was not declared in this scope
   71 |             i=m;j=n;k=o;l=p;
      |                   ^
a.cc:71:23: error: 'o' was not declared in this scope
   71 |             i=m;j=n;k=o;l=p;
      |                       ^
a.cc:71:27: error: 'p' was not declared in this scope
   71 |             i=m;j=n;k=o;l=p;
      |                           ^
Language: C++

#include <bits/stdc++.h>
#define int long long
#define rep(i,n) for(int i=0;i<n;++i)
#define all(a) a.begin(),a.end()
#define P pair<long long,long long>
#define double long double
using namespace std;
//桁
int kt(int a){
  double b=a;
  b=log10(b);
  int c=b;
  return c+1;
 }
int lcm(int a,int b){
  int d=a,e=b,f;
  if(a<b)
    swap(a,b);
  int c,m=1;
  while(m){
    c=a%b;
    if(c==0){
       f=b;
      m--;
    }
    else{
      a=b;
      b=c;
 }
  }
  return d*e/f;
    }
  int gcm(int a,int b){
      int d=a,e=b,f;
  if(a<b)
    swap(a,b);
  int c,m=1;
  while(m){
    c=a%b;
    if(c==0){
       f=b;
      m--;
    }
    else{
      a=b;
      b=c;
 }
  }
  return f;
  }

            }
     
signed main(){
  int a,b;
  cin>>a>>b;
  int c[550][550];
  rep(i,b){
    rep(j,a){
      cin>>c[j][i];
      c[i][j]%=2;
    }
  }
  rep(i,b){
    rep(j,a){
      if(c[i][j]==1)
        rep(k,b){
        rep(l,a){
          if(c[i][j]==c[k][l]&&k==i&&l==j){
            c[i][j]-=1;c[k][l]+=1;
            i=m;j=n;k=o;l=p;
            rep(q,10000)
              if(k<m){
            cout<<m<<n<<m<<n-1;
                n--;
              }
              if(m<k){
                cout<<m<<n<<m<<n+1;
                n++;
              }
              if(m=k){
                cout<<m<<n<<m+1<<n;
                m++;
              }
                if(m==k&&n==p)
                  break;
          } 
        }
      }  
    }
  }
}

Compiler output:
a.cc:52:13: error: expected declaration before '}' token
   52 |             }
      |             ^
a.cc: In function 'int main()':
a.cc:71:15: error: 'm' was not declared in this scope
   71 |             i=m;j=n;k=o;l=p;
      |               ^
a.cc:71:19: error: 'n' was not declared in this scope
   71 |             i=m;j=n;k=o;l=p;
      |                   ^
a.cc:71:23: error: 'o' was not declared in this scope
   71 |             i=m;j=n;k=o;l=p;
      |                       ^
a.cc:71:27: error: 'p' was not declared in this scope
   71 |             i=m;j=n;k=o;l=p;
      |                           ^
Language: C++

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

#define int long long
#define rep(n, i) for (int i = 0; i < n; i++)
#define rep2(m, n, i) for (int i = m; i < n; i++)
#define rep_r(n, i) for (int i = n - 1; i >= 0; i--)

typedef pair<int, int> P;
typedef pair<P, P> PP;

const int MAX_H = 501;
const int MAX_W = 501;

const int x[4] = {-1, 0, 1, 0};
const int y[4] = {0 ,-1, 0, 1};

int h, w;
int a[MAX_H][MAX_W];
bool selected[MAX_H][MAX_W];
vector<PP> v;

void solve() {
    rep2(w + 1, j) {
        if (a[1][j] % 2) {
            a[1][j]--;
            a[1][j + 1]++;
            v.push_back(PP(P(1, j), P(1, j + 1)));
        }
    }
    rep2(2, h + 1, i) {
        int j = (i % 2 == 0) ? w : 1;
        if (a[i - 1][j] % 2) {
            a[i - 1][j]--;
            a[i][j]++;
            v.push_back(PP(P(i - 1, j), P(i, j)));
        }
        if (a[i][j] % 2) {
            int ny = (i % 2 == 0) ? j - 1 : j + 1;
            a[i][j]--;
            a[i][ny]++;
            v.push_back(PP(P(i, j), P(i, ny)));
        }
        j += (i % 2) ? -1 : 1;
        int cnt = 1;
        while (cnt < w) {
            cnt++;
            if (a[i][j] % 2 == 0) continue;
            int ny = (i % 2 == 0) ? j - 1 : j + 1;
            a[i][j]--;
            a[i][ny]++;
            v.push_back(PP(P(i, j), P(i, ny)));
        }
    }
}

signed main() {
    cin >> h >> w;
    rep2(1, h + 1, i) {
        rep2(1, w + 1, j) {
            cin >> a[i][j];
        }
    }
    solve();
    cout << v.size() << endl;
    rep(v.size(), i) {
        cout << v[i].first.first << ' ' << v[i].first.second << ' ' << v[i].second.first << ' ' << v[i].second.second << endl;
    }
    return 0;
}

Compiler output:
a.cc:29:18: error: macro "rep2" requires 3 arguments, but only 2 given
   29 |     rep2(w + 1, j) {
      |                  ^
a.cc:11:9: note: macro "rep2" defined here
   11 | #define rep2(m, n, i) for (int i = m; i < n; i++)
      |         ^~~~
a.cc: In function 'void solve()':
a.cc:29:5: error: 'rep2' was not declared in this scope
   29 |     rep2(w + 1, j) {
      |     ^~~~
Language: C++

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <random>
#include <time.h>
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) > (b) ? (a) : (b))

int main() {
	srand(time(NULL));
	//while (1) {
		int H, W;
		int count = 0;
		int a[500][500] = { 0 };
		int from[500][2] = { 0 };
		int to[500][2] = { 0 };

		scanf("%d %d", &H, &W);
		//H = 4;
		//W = 6;
		for (int i = 0; i < H; i++) {
			for (int j = 0; j < W; j++)
				//a[i][j] = rand() % 10;
				scanf("%d", &a[i][j]);
		}
	//	for (int i = 0; i < H; i++) {
	//		for (int j = 0; j < W; j++)printf("%d ", a[i][j]);
	//		printf("\n");
	//	}
		for (int i = 0; i < H; i++) {
			if (i < H - 1) {
				for (int j = 0; j < W; j++) {
					if (a[i][j] >= 10)printf("%d", a[-100][-100]);
					if (a[i][j] % 2 == 0)continue;
										from[count][0] = i + 1, from[count][1] = j + 1;
					a[i][j] -= 1;
					to[count][0] = i + 2, to[count][1] = j + 1;
					a[i + 1][j] += 1;
					count++;
					
				}
			}
			else if (i == H - 1) {
				for (int j = 0; j < W - 1; j++) {
					if (a[i][j] % 2 == 0)continue;
					from[count][0] = i + 1, from[count][1] = j + 1;
					a[i][j] -= 1;
					to[count][0] = i + 1, to[count][1] = j + 2;
					a[i][j + 1] += 1;
					count++;
				}
			}
		}
		//	if (to[count-1][1] > W)count--;
//		printf("\n\n");
		printf("%d\n", count);
		for (int i = 0; i < count; i++) {
			printf("%d %d %d %d\n", from[i][0], from[i][1], to[i][0], to[i][1]);
		}
		//for (int i = 0; i < H; i++) {
		//	for (int j = 0; j < W; j++)printf("%d ", a[i][j]);
		//	printf("\n");
	//	}
		//	return 0;
		//getchar();
		//printf("\n\n");
	}
}


Compiler output:
a.cc:67:1: error: expected declaration before '}' token
   67 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e9;
const ll mod = 1e9+7;
typedef pair<int,int> P;
typedef pair<pair<int,int>,pair<int,int>> PP;
#define rep(i,N) for(int i=0;i<N;i++)

int main(){
    int h,w;
    cin>>h>>w;
    int a[h][w];
    rep(i,h)rep(j,w)cin>>a[i][j];
    int cnt = 0;
    vector<PP> anst;
     rep(i,h){
        if(i%2==0){
            rep(j,w){
                if(j==w-1&&i==h-1)break;
                if(a[i][j]%2==1){
                    a[i][j]--;
                    if(j==w-1){
                        cnt++;
                        anst.push_back(make_pair(make_pair(i,j),make_pair(i+1,j)));
                        a[i+1][j]++;
                    }else{
                        cnt++;
                        anst.push_back(make_pair(make_pair(i,j),make_pair(i,j+1)));
                        a[i][j+1]++;
                    }
                }
            }
        }else{
            if(j==w-1&&i==h-1)break;
            for(int j=w-1;j>=0;j--){
                if(a[i][j]%2==1){
                    a[i][j]--;
                    if(j==0){
                        cnt++;
                        anst.push_back(make_pair(make_pair(i,j),make_pair(i+1,j)));
                        a[i+1][j]++;
                    }else{
                        cnt++;
                        anst.push_back(make_pair(make_pair(i,j),make_pair(i,j-1)));
                        a[i][j-1]++;
                    }
                }
            }
        }
    }
    cout<<cnt<<endl;
    for(auto itr : anst){
        cout<<itr.first.first+1<<" "<<itr.first.second+1<<" "<<itr.second.first+1<<" "<<itr.second.second+1<<endl;
    }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:16: error: 'j' was not declared in this scope
   35 |             if(j==w-1&&i==h-1)break;
      |                ^
Language: C++

#include <iostream>
#include <cstdio>
#include <string>
#include <algorithm>
#include <utility>
#include <cmath>
#include <vector>
#include <queue>
#define rep(i, n) for(int i = 0; i < n; i++)
using namespace std;
typedef long long ll;

int main() {
    int h, w;
    cin >> h >> w;
    int s = h*w;
    int a[h][w];
    rep(i, h) {
        rep(j, w) {
            cin >> a[i][j];
        }
    }

    int y[s], x[s];
    rep(i, h) {
        rep(j, w) {
            y[i*w+j] = i;
        }
    }
    rep(i, s) {
        int m = i%(2*w);
        if(m < w) {
            x[i] = m;
        }
        else {
            x[i] = (2*w - 1) - m;
        }
    }

    int n = 0, j = 0;
    int ans[s][4];
    rep(i, s-1) {
        if(a[y[i]][x[i]]%2 == 1) {
            a[y[i]][x[i]]--;
            a[y[i+1]][x[i+1]]++;
            ans[j][] = {y[i], x[i], y[i+1], x[i+1]};
            j++;
            n++; 
        }
    }

    cout << n << "\n";

    rep(i, n) {
        rep(k, 3) {
            cout << ans[i][k] << " ";
        } 
        cout << ans[i][3] << "\n";
    }

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:46:20: error: expected primary-expression before ']' token
   46 |             ans[j][] = {y[i], x[i], y[i+1], x[i+1]};
      |                    ^
Language: C++

#include <iostream>
#include <cstdio>
#include <string>
#include <algorithm>
#include <utility>
#include <cmath>
#include <vector>
#include <queue>
#define rep(i, n) for(int i = 0; i < n; i++)
using namespace std;
typedef long long ll;

int main() {
    int h, w;
    cin >> h >> w;
    int s = h*w;
    int a[h][w];
    rep(i, h) {
        rep(j, w) {
            cin >> a[i][j];
        }
    }

    int y[s], x[s];
    rep(i, h) {
        rep(j, w) {
            y[i*w+j] = i;
        }
    }
    rep(i, s) {
        int m = i%(2*w);
        if(m < w) {
            x[i] = m;
        }
        else {
            x[i] = (2*w - 1) - m;
        }
    }

    int n = 0, j = 0;
    int ans[s][4];
    rep(i, s-1) {
        if(a[y[i]][x[i]]%2 == 1) {
            a[y[i]][x[i]]--;
            a[y[i+1]][x[i+1]]++;
            ans[j] = {y[i], x[i], y[i+1], x[i+1]};
            j++;
            n++; 
        }
    }

    cout << n << "\n";

    rep(i, n) {
        rep(k, 3) {
            cout << ans[i][k] << " ";
        } 
        cout << ans[i][3] << "\n";
    }

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:46:20: error: assigning to an array from an initializer list
   46 |             ans[j] = {y[i], x[i], y[i+1], x[i+1]};
      |             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C++

h,w = map(int,input().split())
a = [[] for _ in range(h)]
for i in range(h):
    a[i] = [int(_) for _ in input().split()]
cnt = 0
res = []
for i in range(h):
    for j in range(w):
        if i != h-1 and a[i][j] % 2 == 1:
            cnt += 1
            res.append([i+1,j+1,i+2,j+1])
            a[i+1][j] += 1
for j in range(w-1):
    if a[h-1][j] % 2 == 1:
        cnt += 1
        res.append([h,j+1,h,j+2])
        a[h-1][j+1] += 1
print(cnt)
for i in range(len(res)):
    for j in range(4):
        print(res[i][j],end='')
        if j < 3:
            print(' ',end='')
        if j == 3:
            print()

Compiler output:
a.cc:21:29: error: empty character constant
   21 |         print(res[i][j],end='')
      |                             ^~
a.cc:23:27: error: empty character constant
   23 |             print(' ',end='')
      |                           ^~
a.cc:1:1: error: 'h' does not name a type
    1 | h,w = map(int,input().split())
      | ^
Language: C++

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

int main(){
  size_t h, w;
  cin >> h >> w;
  vector<pair<pair<int, int>, pair<int, int>>> ans;
  vector<vector<int>> hoge(h, vector<int>(w));
  for(auto& i : h)for(auto& j : i)cin >> j;
  for(int i = 0; i < h; ++i){
    for(int j = 0; j + 1 < w; ++j){
      if(hoge[i][i & 1 ? j : w - j - 1] & 1){
        ans.emplace_back(pair<int, int>(i, i & 1 ? j : w - j - 1), pair<int, int>(i, i & 1 ? j + 1 : w - j));
        hoge[i][i & 1 ? j + 1 : w - j] ^= 1;
      }
    }
    if(i + 1 != h && hoge[i][i & 1 ? w - 1 : 0] & 1){
      ans.emplace_back(pair<int, int>(i, i & 1 ? w - 1 : 0), pair<int, int>(i + 1, i & 1 ? w - 1 : 0));
      hoge[i + 1][i & 1 ? w - 1 : 0] ^= 1;
    }
  }
  cout << ans.size() << endl;
  for(const auto& i : ans)cout << i.first.first << " " << i.first.second << " " << i.second.first << " " << i.second.second << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:17: error: 'begin' was not declared in this scope
    9 |   for(auto& i : h)for(auto& j : i)cin >> j;
      |                 ^
a.cc:9:17: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:166,
                 from a.cc:1:
/usr/include/c++/14/valarray:1238:5: note:   'std::begin'
 1238 |     begin(const valarray<_Tp>& __va) noexcept
      |     ^~~~~
In file included from /usr/include/c++/14/filesystem:53,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:200:
/usr/include/c++/14/bits/fs_dir.h:608:3: note:   'std::filesystem::__cxx11::begin'
  608 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
a.cc:9:17: error: 'end' was not declared in this scope
    9 |   for(auto& i : h)for(auto& j : i)cin >> j;
      |                 ^
a.cc:9:17: note: suggested alternatives:
/usr/include/c++/14/valarray:1265:5: note:   'std::end'
 1265 |     end(const valarray<_Tp>& __va) noexcept
      |     ^~~
/usr/include/c++/14/bits/fs_dir.h:613:3: note:   'std::filesystem::__cxx11::end'
  613 |   end(recursive_directory_iterator) noexcept
      |   ^~~
Language: C++

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

int main(){
  size_t h, w;
  cin >> h >> w;
  vector<pair<pair<int, int>, pair<int, int>>>> ans;
  vector<vector<int>> hoge(h, vector<int>(w));
  for(auto& i : h)for(auto& j : i)cin >> j;
  for(int i = 0; i < h; ++i){
    for(int j = 0; j + 1 < w; ++j){
      if(hoge[i][i & 1 ? j : w - j - 1] & 1){
        ans.emplace_back(pair<int, int>(i, i & 1 ? j : w - j - 1), pair<int, int>(i, i & 1 ? j + 1 : w - j));
        hoge[i][i & 1 ? j + 1 : w - j] ^= 1;
      }
    }
    if(i + 1 != h && hoge[i][i & 1 ? w - 1 : 0] & 1){
      ans.emplace_back(pair<int, int>(i, i & 1 ? w - 1 : 0), pair<int, int>(i + 1, i & 1 ? w - 1 : 0));
      hoge[i + 1][i & 1 ? w - 1 : 0] ^= 1;
    }
  }
  cout << ans.size() << endl;
  for(const auto& i : ans)cout << i.first.first << " " << i.first.second << " " << i.second.first << " " << i.second.second << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:46: error: expected unqualified-id before '>' token
    7 |   vector<pair<pair<int, int>, pair<int, int>>>> ans;
      |                                              ^~
a.cc:9:17: error: 'begin' was not declared in this scope
    9 |   for(auto& i : h)for(auto& j : i)cin >> j;
      |                 ^
a.cc:9:17: note: suggested alternatives:
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:166,
                 from a.cc:1:
/usr/include/c++/14/valarray:1238:5: note:   'std::begin'
 1238 |     begin(const valarray<_Tp>& __va) noexcept
      |     ^~~~~
In file included from /usr/include/c++/14/filesystem:53,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:200:
/usr/include/c++/14/bits/fs_dir.h:608:3: note:   'std::filesystem::__cxx11::begin'
  608 |   begin(recursive_directory_iterator __iter) noexcept
      |   ^~~~~
a.cc:9:17: error: 'end' was not declared in this scope
    9 |   for(auto& i : h)for(auto& j : i)cin >> j;
      |                 ^
a.cc:9:17: note: suggested alternatives:
/usr/include/c++/14/valarray:1265:5: note:   'std::end'
 1265 |     end(const valarray<_Tp>& __va) noexcept
      |     ^~~
/usr/include/c++/14/bits/fs_dir.h:613:3: note:   'std::filesystem::__cxx11::end'
  613 |   end(recursive_directory_iterator) noexcept
      |   ^~~
a.cc:13:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   13 |         ans.emplace_back(pair<int, int>(i, i & 1 ? j : w - j - 1), pair<int, int>(i, i & 1 ? j + 1 : w - j));
      |         ^~~
      |         abs
a.cc:18:7: error: 'ans' was not declared in this scope; did you mean 'abs'?
   18 |       ans.emplace_back(pair<int, int>(i, i & 1 ? w - 1 : 0), pair<int, int>(i + 1, i & 1 ? w - 1 : 0));
      |       ^~~
      |       abs
a.cc:22:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   22 |   cout << ans.size() << endl;
      |           ^~~
      |           abs
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <cmath>
#include <queue>
#include <stack>
#include <cstdlib>
#include <map>
#include <iomanip>
#include <set>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define int long long
#define pie 3.141592653589793238462643383279
#define mod 1000000007
#define INF 1145141919364364
#define all(vec) vec.begin(),vec.end()
#define P pair<int,int>
#define S second
#define F first
int gcd(int x, int y) {
	if (y == 0)return x;
	return gcd(y, x%y);
}
int lcm(int x, int y) {
	return x / gcd(x, y)*y;
}
bool prime(int x) {
	for (int i = 2; i <= sqrt(x); i++) {
		if (x%i == 0)return false;
	}
	return true;
}

int kai(int x) {
	if (x == 1)return 1;
	return kai(x - 1)*x%mod;
}

int mod_pow(int x, int y, int moder) {
	int res = 1;
	while (y > 0) {
		if (y & 1)res = res * x%moder;
		x = x * x%moder;
		y >>= 1;
	}
	return res;
}

int comb(int x, int y) {
	if (y > x)return 0;
	if (x == y)return 1;
	return kai(x)* mod_pow(kai(x - y), mod - 2, mod) % mod * mod_pow(kai(y), mod - 2, mod) % mod;
}

int h, w, a[514][514];
int cnt;
vector < pair<pair<int, int>, pair<int, int>>> ans;

signed main() {
	cin >> h >> w;
	rep(i, h) {
		rep(j, w)cin >> a[i][j];
	}
    if(h==1%%w==1){
		cout<<0<<endl;
    	return 0;
    }
  	rep(i, h) {
		if (i % 2 == 0) {
			rep(j, w) {
				if (a[i][j] % 2) {
					cnt++;
					if (j == w - 1) {
						ans.push_back({ { i + 1, j + 1 }, { i + 2, j + 1 } });
						a[i + 1][j]++;
					}
					else {
						ans.push_back({ {i + 1, j + 1}, {i + 1, j + 2} });
						a[i][j + 1]++;
					}
				}
				if (i == h - 1 && j == w - 2)break;
			}
		}
		else {
			for (int j = w - 1; j >= 0; j--) {
				if (a[i][j] % 2) {
					cnt++;
					if (j == 0) {
						ans.push_back({ {i + 1,j + 1},{i + 2,j + 1} });
						a[i + 1][j]++;
					}
					else {
						ans.push_back({ {i + 1,j + 1},{i + 1,j} });
						a[i][j - 1]++;
					}
				}
				if (i == h - 1 && j == 1)break;
			}
		}
	}
	cout << cnt << endl;
	rep(i, (int)ans.size()) {
		cout << ans[i].first.first << " " << ans[i].first.second << " " << ans[i].second.first << " " << ans[i].second.second << endl;
	}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:67:13: error: expected primary-expression before '%' token
   67 |     if(h==1%%w==1){
      |             ^