AOJ Volume0-0017

http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0017&lang=jp

#include <iostream>
#include <string>
using namespace std;

bool hoge (string read) {
    if (read.find("this") != string::npos) {
        return 0;
    }else if (read.find("that") != string::npos) {
        return 0;
    }else if (read.find("the") != string::npos) {
        return 0;
    }
    return 1;
}

int main (int argc, const char * argv[])
{
    string read;
    while (getline(cin,read)) {
        
        for (int j=0;hoge(read);j++) {
            for (int i=0; i < read.size(); i++) {
                if(read[i] == 'z') {
                    read[i] = 'a';
                }else if(read[i] == ' ' || read[i] == '.') {
                    
                }else {
                    read[i] = read[i] + 1;
                }
            }
        }
        cout << read << "\n";
    }
    return 0;
}