hdu4144 Bacon's Cipher

#include <stdio.h>int check(char ch){if(ch>='A'&&ch<='Z')return 0;elsereturn 1;}int main(){int n,i,ans;char str[10002];while(scanf("%d %s",&n,str)!=EOF){for (i=0;i<n;i+=5){ans=0;if(check(str[i]))ans+=16;if(check(str[i+1]))ans+=8;if(check(str[i+2]))ans+=4;if(check(str[i+3]))ans+=2;if(check(str[i+4]))ans+=1;printf("%c",ans+'A');}printf("\n");}return 0;}