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add echo.cpp

Showing 1 changed file with 12 additions and 0 deletions
1 +#include<iostream>
2 +
3 +using namespace std;
4 +
5 +int main()
6 +{
7 + int a;
8 + cin>>a;
9 + cout<<a;
10 +
11 + return 0;
12 +}
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