Go: package main

import (
	"bufio"
	"os"
	"strings"
	"fmt"
)

var scanner = bufio.NewScanner(os.Stdin)

func nextString() string {
	scanner.Scan()
	return scanner.Text()
}

func cipher(text string, direction int, int_shift int) string {
	shift, offset := rune(int_shift), rune(26)
	runes := []rune(text)
	for index, char := range runes {
		switch direction {
		case 1:
			if char >= 'a' && char <= 'z'-shift || char >= 'A' && char <= 'Z'-shift {
				char = char + shift
			} else if char > 'z'-shift && char <= 'z' || char > 'Z'-shift && char <= 'Z' {
				char = char + shift - offset
			}
		case -1:
			if char >= 'a'+shift && char <= 'z' || char >= 'A'+shift && char <= 'Z' {
				char = char - shift
			} else if char >= 'a' && char < 'a'+shift || char >= 'A' && char < 'A'+shift {
				char = char - shift + offset
			}
		}
		runes[index] = char
	}
	return string(runes)
}

func main() {
	for {
		infos := strings.Split(nextString(), " ")
		plain := make([]string, len(infos))
		if len(infos) == 0 {
			break
		}
		// println(infos)
		Decryption:
			for i := 0; i < 26; i++ {
				for j := range infos {
					plain[j] = cipher(infos[j], 1, i)
				}
				for j := range plain {
					if plain[j] == "this" || plain[j] == "that" || plain[j] == "the" {
						break Decryption
					}
				}
			}
			fmt.Println(strings.Join(plain, " "))
	}
}

C++: #include <string>
#include <vector>
#include <algorithm>
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <queue>
#include <map>
#define INF 100000000
#define rep(i,a) for(int i=0;i<(a);i++)

using namespace std;
typedef long long ll;

char p(char ch){
    char ret=ch+1;
    if(ret==('{'))ret='a';
    return ret;
}


int main(){
    string s;
    getline(cin,s);


    rep(i,26){
        rep(j,s.size()){
            if(s[j]!=' ' && s[j]!='.'){
                s[j]=p(s[j]);
            }
        }

        if( s.find("the",0)!=-1 || s.find("this",0)!=-1 || s.find("that",0)!=-1 ){
            cout<<s<<endl;
        }
    }
    
    return 0;
    
}

C++: #include<iostream>
#include<cstdio>
#include<cmath>
#include<vector>
#include<list>
#include<set>
#include<map>
#include<stack>
#include<queue>
#include<string>
#include<utility>
#include<algorithm>
#include<functional>
#include<deque>
#include<string.h>
#include<ctype.h>
#include<time.h>
#include<stdlib.h>
using namespace std;

char a[85];

bool search_th(){
  for (int i = 0; i < strlen(a); i++){
    if (a[i] == 't' && a[i+1] == 'h'){
      if (a[i+2] == 'e' || (a[i+2] == 'i' && a[i+3] == 's') || (a[i+2] == 'a' && a[i+3] == 't')){
        return true;
      }
    } else {
      i += 2;
    }
  }
  return false;
}

int main(){
  while (cin.getline(a, sizeof(a))){
    for (int i = strlen(a); i < 85; i++){
      a[i] = '\0';
    }
    while (1){
      if (search_th() == true){
        cout << a << endl;  break;
      }
      for (int j = 0; j < strlen(a); j++){
        if (a[j] >= 'a' && a[j] <= 'y') a[j]++;
        if (a[j] == 'z')                a[j] = 'a';
      }
      cout << a << endl;
    }
  }
  return 0;
}

C++: #include<cstdio>
#include<iostream>
#include<string>
#include<cctype>
using namespace std;
string cea (string a){
  for(int i=0;i<a.length();i++){
    if(isalpha(a[i])) a[i]=(char)a[i]+1;
    if(a[i]=='{')a[i]='a';
  }
    return a;
}

string cear(string b,int c){
  for(int i=0;i<c;i++){
    b=cea(b);
  }
  return b;
}


int main(){
  string input[100];
  string in;
  int n=0;
  int ans=0;
  while(cin>>in){
    if(in=="00")break;
    input[n]=in;
    n++;
    
  }
  for(int i=0;i<30;i++){
    for(int j=0;j<n;j++){
      in=cear(input[j],i);
      if(in=="the"||in=="this"||in=="that"){ans=i;}
    }
  }
  for(int i=0;i<n-1;i++){
    cout<<cear(input[i],ans)<<' ';
  }
  cout<<cear(input[n-1],ans)<<endl;
  //  cout<<ans<<endl;

}

C++: #include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cstring>
#include <map>
#include <queue>
#include <stack>
#include <set>
#include <functional>
#include <sstream>
using namespace std;
int main(){
	string buf;
	
	while(getline( cin,buf )){
	
		for(int i=0;i<30;++i){
			string tmp = buf;
			for(int j=0;j<tmp.size();++j){
				if( tmp[j] >= 'a' && tmp[j] <= 'z' ){
					int aaa = (int)tmp[j] + i;
					if( aaa > 'z' ){
						int diff = aaa -1 - 'z' ;
						tmp[j] = 'a' + diff;
					}else{
						tmp[j] = aaa;
					}
				}
			}
			if( tmp.find("the")!=string::npos || tmp.find("this")!=string::npos ||tmp.find("that")!=string::npos ){
				cout << tmp << endl;
				break;
			}
			//cout << i << " " << tmp << endl;
		}
	}
	return 0;
}

C++: #include <cstdio>
#include <iostream>
#include <cstring>

using namespace std;

char data[26]={'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
char trans[100];
char mozi;
int position=0;
int zoom;
int first_check=0,first_position=0;
int now;
char result;
int flag = 0;

int main(){
	while(flag == 0){
		scanf("%c",&mozi);
		if(first_check == 0)

		for(int i=0;i<26 && first_check == 0;i++){
			if(mozi == data[i]){
				first_position = i;
				zoom = first_position - 19;
				first_check = 1;
				break;
			}
		}




		if(mozi == ' ' || mozi == '.' || mozi == '\n'){
			if(mozi == ' ' || mozi == '.'){
				trans[position] = mozi;
				position++;
			}

			if(mozi == '\n'){
				trans[position] = '\n';
				cout << trans << endl;
				first_check = 0;
				position = 0;
				memset(trans,'\0',sizeof(trans));
				flag = 1;
			}
		}else{
			for(int i=0;i<26;i++){
				if(data[i] == mozi){
					now = i;
					break;
				}
			}

			trans[position] = data[now - zoom];
			position++;

		}
	}
}

C++: #include <iostream>
#include <string>
int main(int argc, const char * argv[])
{
    using namespace std;
    string word;
    int i;
    while (getline(cin, word)) {
        for (i = 0; i < word.length(); i++) {
            if (isalpha(word[i])) {
                word[i] -= 4;
            }
        }
        cout << word << endl;
    }
    return 0;
}

C++: #include<iostream>
#include<vector>
#include<string>
using namespace std;

string Caesar(string a) {
	for (int b = 0; b < a.length(); b++) {
		if (a[b] == 'z')a[b] = 'a';
		else if (a[b] >= 'a'&&a[b] < 'z')a[b] = a[b] + 1;
	}
	return a;
}
int main() 
{
	string a;
	while (getline(cin, a)) {
		for (int b = 0; b < 26; b++) {
		    a=Caesar(a);
			for (int c = 0; c < a.length() - 4; c++) {
				if (a[c] == 't'&&a[c + 1] == 'h') {
					if (a[c + 2] == 'e') { cout << a << endl; goto l; }
					else	if (a[c + 2] == 'a'&&a[c + 3] == 't') { cout << a << endl; goto l; }
					else	if (a[c + 2] == 'i'&&a[c + 3] == 's') { cout << a << endl; goto l; }
				}
			}
			if(a[a.length()-1]=='t'&&a[a.length() - 2] == 'h'&&a[a.length() - 3] == 'e') { cout << a << endl; break; }
		l:;
		}
	}
}

C++: #include<iostream>
#include<vector>
#include<string>

using namespace std;

char returnc(char c){
  if('a'<=c && c<='z'){
    if(c=='z')return 'a';
    return ++c;
  }
  return c;
}
int main(void){
  vector<string> ss;
  string s,str;
  while(getline(cin,s)){
  s+= " ";
  for(int i = 0 ; i < s.size() ; i ++){
    if(s[i] == ' '){
      ss.push_back(str);
      str="";
    }else{
      str+=s[i];
    }
  }
  bool ok=true;
  string out[] = {"this","that","the"};
  while(ok){
    for(int i = 0 ; i < ss.size(); i ++){
      //cout<<ss[i]<<endl;
      for(int j = 0 ; j < ss[i].size() ; j ++){
	ss[i][j] = returnc(ss[i][j]);
      }
      for(int j = 0 ; j < 3 ; j ++){
	if(ss[i] == out[j])ok=false;
      }
    }
  }
  for(int i = 0 ; i < ss.size()-1 ; i ++){
    cout<<ss[i]<<" ";
  }
  cout<<ss[ss.size() - 1]<<endl;
  }
}