#include <stdio.h> 
 
int strnicmp(char *str,char *needle,int len){ 
 
  int count=0; 
 
  while(count!=len){ 
 
    if(tolower(*(str+count))==tolower(*(needle+count))){ 
 
      ++count; 
 
    }else{ 
 
      return 1; 
 
    } 
 
  } 
 
  return 0; 
 
} 
 
int main(int argc,char **argv){ 
 
  char *name="iAM ^^"; 
 
  if(strnicmp(name,"iam",3)==0){ 
 
    printf("yes\n"); 
 
  }else{ 
 
    printf("no\n"); 
 
  } 
 
  return 0; 
 
}