Ratsun reitit

input/code.cpp: In function 'int main()':
input/code.cpp:20:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(int i=0; i<v.size(); i++){
                      ~^~~~~~~~~

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

vector<pair<int,int>> v, w;
int x,y,n;
int main(){
    cin>>n;
    int t[n][n];
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            t[i][j]=1000000;
        }
    }
    int maara = n*n;
    t[0][0] =0;
    maara--;
    v.push_back({0,0});
    int indeksi = 1;
    while(maara>0){
        for(int i=0; i<v.size(); i++){
            x = v[i].first;
            y = v[i].second;
            if(0<=x+1&&x+1<n&&0<=y+2&&y+2<n){
                if(t[x+1][y+2]==1000000){
                    maara--;
                    w.push_back({x+1,y+2});
                    t[x+1][y+2]=indeksi;
                }
            }
            if(0<=x-1&&x-1<n&&0<=y+2&&y+2<n){
                if(t[x-1][y+2]==1000000){
                    maara--;
                    w.push_back({x-1,y+2});
                    t[x-1][y+2]=indeksi;
                }
            }
            if(0<=x-1&&x-1<n&&0<=y-2&&y-2<n){
                if(t[x-1][y-2]==1000000){
                    maara--;
                    w.push_back({x-1,y-2});
                    t[x-1][y-2]=indeksi;
                }
            }
            if(0<=x+1&&x+1<n&&0<=y-2&&y-2<n){
                if(t[x+1][y-2]==1000000){
                    maara--;
                    w.push_back({x+1,y-2});
                    t[x+1][y-2]=indeksi;
                }
            }
            if(0<=x+2&&x+2<n&&0<=y+1&&y+1<n){
                if(t[x+2][y+1]==1000000){
                    maara--;
                    w.push_back({x+2,y+1});
                    t[x+2][y+1]=indeksi;
                }
            }
            if(0<=x-2&&x-2<n&&0<=y+1&&y+1<n){
                if(t[x-2][y+1]==1000000){
                    maara--;
                    w.push_back({x-2,y+1});
                    t[x-2][y+1]=indeksi;
                }
            }
            if(0<=x+2&&x+2<n&&0<=y-1&&y-1<n){
                if(t[x+2][y-1]==1000000){
                    maara--;
                    w.push_back({x+2,y-1});
                    t[x+2][y-1]=indeksi;
                }
            }
            if(0<=x-2&&x-2<n&&0<=y-1&&y-1<n){
                if(t[x-2][y-1]==1000000){
                    maara--;
                    w.push_back({x-2,y-1});
                    t[x-2][y-1]=indeksi;
                }
            }
        }
        
        indeksi++;
        v.clear();
        v=w;
        w.clear();
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            cout<<t[i][j]<<" ";
        }
        cout<<"\n";
    }
    
}

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

Test 7

Group: 1, 2, 3

Verdict: ACCEPTED

Test 8

Group: 2, 3

Verdict: ACCEPTED

Test 9

Group: 2, 3

Verdict: ACCEPTED

Test 10

Group: 2, 3

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED