Submission #890504

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Source Code Expand

#include <iostream>
#include <iomanip>
#include <cmath>
#include <algorithm>
#include <functional>
#include <vector>
#include <map>
#include <set>
#include <tuple>

using namespace std;

#define D(x) x
#define REP(i,a,b) for (int i = (a); i < (b); ++i)

int main() {
    ios_base::sync_with_stdio(false);
    cout << setprecision(12) << fixed;

    string s;
    cin >> s;
    REP(i,0,4)
        cout << s[i];
    cout << " ";
    REP(i,4,s.length())
        cout << s[i];
    cout << endl;
	return 0;
}

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