Submission #336929

#	Time	Username	Problem	Language	Result	Execution time	Memory
336929		BY_KUTBILIM	Red-blue table (IZhO19_stones)	C++14	100 / 100	76 ms	2284 KiB

stones

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

#define ff first
#define ss second
#define pb push_back
#define ll long long

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie();

    int t;
    cin >> t;
    while(t--){
        int n, m;
        cin >> n >> m;
        char ans[n][m];
        bool f = false;
        if(n < m){
            swap(n, m);
            f = 1;
        }
        char a[n][m];
        for(int i = 0; i < n; i++){
            for(int j = 0; j < m; j++){
                a[i][j] = '+';
            }
        }
        
        int half = n / 2 + 1, J = 0, Ans = n;
        for(int j = 0; j < (m - 1) / 2; j++){
            for(int i = 0; i < n; i++){
                a[i][J] = '-';
                half--;
                if(!half){
                    half = n / 2 + 1;
                    J++;
                    Ans++;
                }
            }
        }
        
        cout << Ans << endl;
        if(f)swap(n, m);
        for(int i = 0; i < n; i++){
            for(int j = 0; j < m; j++){
                if(f)cout << char('+' + '-' - a[j][i]);
                else cout << a[i][j];
            }
            cout << endl;
        }
    }

    return 0;
}

Compilation message (stderr)

stones.cpp: In function 'int main()':
stones.cpp:19:14: warning: unused variable 'ans' [-Wunused-variable]
   19 |         char ans[n][m];
      |              ^~~

• Subtask 1: 17 / 17
• Subtask 2: 10 / 10
• Subtask 3: 16 / 16
• Subtask 4: 11 / 11
• Subtask 5: 15 / 15
• Subtask 6: 31 / 31