简单题

#include 
      
        #include 
       
         #include 
        
          #include 
         
           using namespace std; #define maxn 105 int n, d; bool vis[maxn]; int main() {
     //freopen("t.txt", "r", stdin);     while (scanf("%d%d", &n, &d), n | d)     {
             memset(vis, 0, sizeof(vis)); for (int i = 0; i < d; i++) for (int i = 0; i < n; i++)             {
     int a;                 scanf("%d", &a); if (!a)                     vis[i] = true;             } bool ok = false; for (int i = 0; i < n; i++) if (!vis[i])             {
                     ok = true; break;             } if (ok)             printf("yes\n"); else             printf("no\n");     } return 0; }