Submission #5028186

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Source Code Expand

#include <iostream>
#include <string>
#include <cstring>
#include <cmath>
#include <cstdio>
#include <algorithm>
using namespace std;
#define ll long long
int main (){
    string a;
    cin >> a;
    a[3] = '8';
    cout << a << endl;
    return 0;
}

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