/** @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; }

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