Submission #890798

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Source Code Expand

#include <algorithm>
#include <climits>
#include <cmath>
#include <cstring>
#include <ctime>
#include <iostream>
#include <map>
#include <numeric>
#include <vector>

#define ALL(v) (v).begin(),(v).end()
#define REP(i,p,n) for(int i=p;i<(int)(n);++i)
#define rep(i,n) REP(i,0,n)
#define dump(a) (cerr << #a << "=" << (a) << endl)
#define DUMP(list) cout << "{␣"; for(auto nth : list){ cout << nth << "␣"; } cout << "}" << endl;

using namespace std;

int main() {
    string S;
    cin >> S;
    for (int i = 0; i < S.size(); ++i) {
        cout << S[i];
        if (i == 3) cout << " ";
    }
    cout << endl;
    return 0;
}

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