Go: package main

import (
        "fmt"
)

func main () {
        var str string
        fmt.Scanf("%s", &str)
        show(len(str)-1, str)
}

func show(n int, str string) {
        if n == 0 {
                fmt.Printf("%s\n", string(str[n]))
        } else {
                fmt.Printf("%s", string(str[n]))
                show(n-1, str)
        }
}

C++: #include <stdio.h>
#include <string.h>

char *reverse(char *s)
{
    int i;
    char tmp;
    for(i=0; i<strlen(s)/2; i++){
        tmp = s[i];
        s[i] = s[strlen(s)-1-i];
        s[strlen(s)-1-i] = tmp;
    }
    return s;
}

int main()
{

    char str[21];

    scanf("%s", str);
    printf("%s\n", reverse(str));

    return 0;
}

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

int main(){
	string str,ret ="";

	cin >> str;
	for(int i=str.size()-1;i>=0;i--){
		ret += str[i];
	}

	cout << ret << endl;

    return 0;
}

C++: #include<string.h>
#include<stdio.h>
int main(void)
{
	char a[100];
	int A,i;
	scanf("%s",a);
	A=strlen(a);
	for(i=0;i<A+1;A--){
		printf("%c",a[A]);
	}
	printf("\n");
	return 0;
}

C++: import java.util.Scanner;
import java.lang.StringBuffer;

class Main{
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        StringBuffer sb = new StringBuffer(in.nextLine());
        System.out.println(sb.reverse().toString());
    }
}

C++: #include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#define N 20
using namespace std;

int main() {
    char str[N];
    cin >> str;
    reverse(str,str+strlen(str));
    printf("%s\n",str);
    return 0;
}

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

long long LCM(long long c,long long d){
	long long res=d;
	if(c%d!=0)res=LCM(d,c%d);
	return res;
}
int main() {
    clock_t cTimeStart, cTimeEnd;
    cTimeStart = clock();           // 現在時刻
    string str;
    cin>>str;
    int len=str.size();
    for(int i=0;i<len;++i){
    	cout<<str[len-i-1];
    }
    cout<<endl;
    cTimeEnd = clock();           // 現在時刻
//    cout<< "処理時間:" <<(cTimeEnd - cTimeStart)/1000 << "[ms]" << endl;

	return 0;
}

C++: using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace contest6
{
    class Program
    {
        static void Main(string[] args)
        {
            //空白で分割する
            var line_origin = Console.ReadLine();
            line_origin.Reverse();
            Console.WriteLine(line_origin);
        }
    }
}

C++: #include<iostream>
//#include<algorithm>
//#include<cmath>
#include<string>
//#include<cctype>
//#include <vector>
using namespace std;
int main(){
	string s;
	cin >> s;
	reverse(s.begin(), s.end());
	cout << s << endl;
	return 0;
}

C++:  #include <iostream>
#include <string>
using namespace std;
int main(){
	string str;
	int i,j;
	cin >> str;
	string st;
	for( i=str.size() ; i>=0 ; i-- )
		st+=str[i] ;
	cout << st << endl;
}

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

int main(){
    string s;
    cin >> s;
    for(int i=s.size()-1;i>=0;i--){
        cout << s[i];
    }
    cout << endl;
}

C++: #include<iostream>
#include<stdio.h>

int main(){
	int i;
	char s[21];

	scanf("&s",s);
	for(i=0;s[i]!='\0';i++);
	if(i>0) i--;
	for(;i>=0;i--) std::cout<<s[i];
	std::cout<<std::endl;

	return 0;
	}

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

int main() {
  std::string input;
  std::getline(std::cin, input);
  std::reverse(input.begin(), input.end());
  std::cout << input + '\n';
  return 0;
}

C++: #include<iostream>
#include<stdio.h>
#include<string>
using namespace std;

int main(){
  string s;
  cin >> s;
  int k;
  for(k=s.size();k>=0;k--){
    printf("%c",s[k]);
  }
  return 0;
}

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

int main(void) {
    std::string str;
    std::cin >> str;

    std::reverse(str.begin(), str.end());
    std::cout << str << std::endl;

    return 0;
}

C++: #include<iostream>
using namespace std;
int main(){
  long long  a,b,c,A,B;
  while(cin>>a>>b){
    A=a;
    B=b;
    while(b!=0){
      c=a%b;
      a=b;
      b=c;
    }
    cout<<a<<' '<<A/a*B<<endl;
  }
  
}

C++: #include <iostream>
#include <cstring>
using namespace std;
 
int main(){
    char str[21];
    char temp[21];
    int i = 0;
 
    memset(str, 0, sizeof(str));
    memset(temp, 0, sizeof(temp));
 
    while(cin >> str){
        int n = strlen(str);
        for(n--; n!=0; ){
            temp[i++] = str[n--];
        }
        cout << temp << endl;
    }
    return 0;
}

C++: #include <stdio.h>

int len(char *c){
    int i = 0;
    while(*c!='\0'){
        i++;
        c++;
    }
    return i;
}

int main(){
    char s[21];
    char res[21];
    int i;
    scanf("%s",s);
    for(i=0;i<len(s);i++){
        res[i] = s[len(s)-i-1];
    }
    printf("%s\n",res);
    return 0;
}

C++: #include<stdio.h>

int main(){
    int i;
    char s[20];
    for(i=0;i<20;i++)s[i]='\0';
    scanf("%s",s);
    for(i=20-1;i>=0;i--)
        if(s[i]!='\0')printf("%c",s[i]);

    return 0;
}

C++: #include<iostream>
using namespace std;
int main () {
    string mozi;
    cin >> mozi;
    int y;
    y = mozi.length();
    string reverse;
    for(int i=0;i<y;++i){
        reverse[i]=mozi[y-i];
    }
    cout << reverse << endl;
    return 0;
}

C++: #include <iostream>
#include <vector>
#include <math.h>
#include <string>

int main(void);
std::string rev_string(std::string str);


int main(){
	std::string str = "";
	//char str[20];
	std::cin >> str;
	std::cout << rev_string(str);

	//while (1);
	return 0;
}

//*
std::string rev_string(std::string str){
	int i;
	int len = str.length();
	for (i = 0; i < len / 2; i++) {
		char temp = str[i];
		str[i] = str[len - i - 1];
		str[len - i - 1] = temp;
	}

	return str;
}
//*/

C++: #include <iostream>
#include <string>
using namespace std;
int main() {
  string s;
  while(getline(cin, s)) {
    // reverse(s.begin(), s.end());
    cout << s << endl;
  }
  return 0;
}

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

using namespace std;

int main()
{
    string a;

    cin >> a;

    int PSa = a.length();

    for (int x = PSa-1; x >= 0; x--){
        cout <<a[x]<<endl;
    }

    return 0;
}

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

int main(){
	string w;
	cin >> w;

	for(int i=w.size(); i>0; i--){
		cout << w[i-1];
	}
	cout << endl;
	return 0;
}

C++: #include <stdio.h>
#include <vector>

using namespace std;

int main(void) {
        char input;
        vector<char> str(5);

        while((input = getchar()) != '\n') {
                str.insert(str.begin(), input);
        }

        for (char output : str) {
                putchar(output);
        }
        puts("");

        return 0;
}

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

using namespace std;

int main()
{
    string str;
    while(cin >> str) {
        for(int i = str.size(); i >= 0; i--)
            cout << str.substr(i, 1);
        cout << endl;
    }
}

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

int main()
{
	int i;
	string str;
	cin >> str;
	reverse(str.begin(),str.end());
	cout << str <<endl;

	return 0;
}

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

using namespace std;

void solve()
{
	string str;
	cin >> str;
	for(int i = str.size() - 1; i >= 0; --i)
	{
		cout << str[i];
	}
	cout << endl;
}

int main()
{
	solve();
	return(0);
}

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

using namespace std;



int main(){
	string str;
	int i;
	
	cin >> str;

	i = str.size()-1;

	for (; i >= 0; i--){
		cout << str[i];
	}
	cout << endl;
	

}