Island

input/code.cpp: In function 'int32_t main()':
input/code.cpp:37:5: error: expected ',' or ';' before 'for'
   37 |     for(int i=mx;i<mn;i++){
      |     ^~~
input/code.cpp:37:18: error: 'i' was not declared in this scope
   37 |     for(int i=mx;i<mn;i++){
      |                  ^
input/code.cpp:27:13: warning: unused variable 'mx' [-Wunused-variable]
   27 |     int n,t,mx=2,mn,x=-1;
      |             ^~
input/code.cpp:27:21: warning: unused variable 'x' [-Wunused-variable]
   27 |     int n,t,mx=2,mn,x=-1;
      |                     ^

#include <bits/stdc++.h>
using namespace std;
#define int long long 
#define ve vector
#define pr pair
#define st string
#define mt multiset
#define vi ve<int>
#define va ve<char>
#define vo ve<bool>
#define vd ve<double>
#define vpr ve<pr
#define vii ve<vi>
#define vaa ve<va>
#define voo ve<vo>
#define vdd ve<vd>
#define vppr ve<vpr
#define f first
#define s second
#define z size()
#define rz resize
#define ub upper_bound
#define lb lower_bound
vaa m;
int dx[]={1,0,-1,0},dy[]={0,1,0,-1};
int32_t main(){
    int n,t,mx=2,mn,x=-1;
    cin>>n>>t;
    mn=n-1;
    m.resize(n+1,va(n+1));
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++){
            cin>>m[i][j];
        }
    }
    vii v(n+1,vi(n+1,-1))
    for(int i=mx;i<mn;i++){
        for(int j=mx;j<mn;j++){
            v[i][j]=min(v[i-1][j]+1,v[i][j-1]+1);
        }
    }

    while(t--){
        int a,b,c,d;
        cin>>a>>b>>c>>d;

    }
    return 0;
}