Submission #890268

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Source Code Expand

#include <iostream>
#include <sstream>
#include <vector>
#include <string>
#include <cstring>
#include <algorithm>
#include <queue>
#include <map>
#include <set>

#define REP(i,k,n) for(int i=k;i<n;i++)
#define rep(i,n) for(int i=0;i<n;i++)
#define each(it,v) for(__typeof((v).begin()) it=(v).begin();it!=(v).end();it++)
#define INF 1<<30
#define mp make_pair

using namespace std;
typedef long long ll;
typedef pair<int,int> P;

int main() {
	string s;
	cin >> s;

	rep(i, 4) {
		cout << s[i];
	}
	cout << " ";
	REP(i, 4, s.size()) cout << s[i];
	cout << endl;
	return 0;
}

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