RE求帮

#include<bits/stdc++.h>
using namespace std;
int main() {
    int n,m,b,c,d,e,t,x=0,y=0,z[1000],s;
    cin>>n>>m;
    int a[n+1][m+1]={0};
    for(int i=1;i<=n;i++)for(int j=1;j<=m;j++)cin>>a[i][j];
    cin>>t;
    while(t!=0){
        cin>>b>>c>>d>>e;
        swap(a[b][c],a[d][e]);
        t--;
    }
    for(int i=1;i<=n;i++){
        for(int j=1;j<=m;j++){
            s=1;
            if(i>1&&a[i][j]<=a[i-1][j])s=0;
            if(i<n&&a[i][j]<=a[i+1][j])s=0;     
            if(j>1&&a[i][j]<=a[i][j-1])s=0;     
            if(j<m&&a[i][j]<=a[i][j+1])s=0;     
            if(s==1){
                x++;
                z[y]=i;y++;  
                z[y]=j;y++; 
            }
        }
    }
    cout<<x<<endl;
    for(int i=0;i<y;i+=2)cout<<z[i]<<" "<<z[i+1]<<endl;
    return 0;
}