UVa409-Excuses, Excuses!

#include <cstdio>#include <cctype>#include <cstring>int main(){ int num[1000],maxnum; char word_list[1000][100]; char excuse[1000][100]; char s[1000][100]; int i,j,k,l; int cas=1; int n,m; while(scanf("%d %d",&m,&n)!=EOF) {  for(i=0;i<m;++i)   scanf("%s",word_list[i]);  getchar();  for(i=0;i<n;++i)  {   gets(excuse[i]);   strcpy(s[i],excuse[i]);  }  for(i=0;i<n;++i)  {   int len=strlen(s[i]);   for(j=0;j<len;++j)   {    if(isupper(s[i][j]))     s[i][j]=s[i][j]-'A'+'a';   }   num[i]=0;  }  maxnum=0;  for(i=0;i<m;++i)//word_list  {   for(j=0;j<n;++j)//excuse   {    int len=strlen(s[j])-strlen(word_list[i])+1;    for(k=0;k<len;++k)    {     if(s[j][k]==word_list[i][0])     {      int flag=1;      for(l=0;l<(int)strlen(word_list[i]);++l)      {       if(word_list[i][l]!=s[j][k+l])       {        flag=0;        break;       }      }      if(flag==1&&!isalpha(s[j][k-1])&&!isalpha(s[j][k+l]))       num[j]++;     }    }    if(num[j]>maxnum)     maxnum=num[j];   }  }  printf("Excuse Set #%d\n",cas++);  for(i=0;i<n;++i)  {   if(maxnum==num[i])    printf("%s\n",excuse[i]);  }  printf("\n"); } return 0;}