#include <bits/stdc++.h> using namespace std; int main(){ int tc; scanf("%d",&tc); while (tc--){ int n,m; scanf("%d%d",&n,&m); if (n > m){ printf("%d\n",n+(m-1)/2); for (int i = 0; i < n; i++){ for (int j = 0; j < m; j++){ if (j < (m-1)/2){ printf("-"); } else printf("+"); } printf("\n"); } } else{ printf("%d\n",(n-1)/2+m); for (int i = 0; i < n; i++){ for (int j = 0; j < m; j++){ if (i < (n-1)/2){ printf("+"); } else printf("-"); } printf("\n"); } } } }

stones.cpp: In function 'int main()':
stones.cpp:5:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    5 |     scanf("%d",&tc);
      |     ~~~~~^~~~~~~~~~
stones.cpp:8:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    8 |         scanf("%d%d",&n,&m);
      |         ~~~~~^~~~~~~~~~~~~~