zoj 2130 5 Spots

#include <iostream>#include <string>using namespace std;int main(void){    int H, W, h, w;    char pic[100][100], pot[100][100];    while(cin >> H >> W >> h >> w)    {        for(int i = 0; i != H; ++i) cin >> pic[i];         for(int i = 0; i != h; ++i) cin >> pot[i];        int cnt = 0; for(int i = 0; i+h <= H; ++i) for(int j = 0; j+w <= W; ++j) {     bool match = 1;     for(int k = 0; k != h; ++k)     {         for(int l = 0; l != w; ++l)         {  if(pot[k][l] != '.' && pic[i+k][j+l] != pot[k][l])  {      match = 0;      break;  }         }         if(match == 0) break;     }     if(match) ++cnt; }        cout << cnt << endl;    }     }