0017: Caesar Cipher

aoj0017.cpp

#include<iostream>
#define F )!=string::npos
#define N s.find(
using namespace std;
main(){
	string s;
	while(getline(cin,s)){
		for(int i,j=26;j--;){
			if(N"the"F||N"this"F||N"that"F){
				cout<<s<<endl;break;
			}
			for(i=s.size();i--;)
				s[i]=s[i]-'z'?96<s[i]?s[i]+1:s[i]:97;
		}
	}
	return 0;
}