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## A - Move Right Editorial by en_translator

If you are new to learning programming and do not know where to start, please try Problem A “Welcome to AtCoder” from practice contest. There you can find a sample code for each language.
Also, if you are not familiar to problems in programming contests, we recommend you to try some problems in “AtCoder Beginners Selection” (https://atcoder.jp/contests/abs).
「競プロ典型 90 問」(Typical 90 Problems of Competitive Programming) (https://atcoder.jp/contests/typical90) is a collection of typical 90 competitive programming problems; unfortunately, currently the problem statements are all Japanese.
「C++入門 AtCoder Programming Guide for beginners (APG4b)」(https://atcoder.jp/contests/APG4b) is a C++ tutorial for competitive programmers. Sadly, this is only in Japanese too.

Let $$S_i$$ denote the $$i$$-th character of string $$S$$.

Let $$T$$ be the string that should be output in this problem, then $$T$$ satisfies:

• $$T_1=$$ 0
• $$T_2=S_1$$
• $$T_3=S_2$$
• $$T_4=S_3$$

so it is sufficient to construct such a string $$T$$ and print it. In many programming languages, the $$i$$-th character of a string $$S$$ can be obtained as S[i]. Note that however, the index (i in s[i]) starts with $$0$$ in many languages.

Sample code (C++)

#include<bits/stdc++.h>
using namespace std;

int main(){
string S;
cin >> S;
string T(4,0);
T[0]='0';
T[1]=S[0];
T[2]=S[1];
T[3]=S[2];
cout << T;
}


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