Submission #890782

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Source Code Expand

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include<cstdio>
#include<cstring>
#include<cstdlib>
#include<cmath>
#include<iostream>
#include<algorithm>
#include<vector>
#include<map>
#include<set>
#include<queue>
#include<bitset>
#include<utility>
#include<functional>
#include<iomanip>
#include<sstream>
#include<ctime>
#include<cassert>

//[a, b)
#define rep(i,a,b) for (int i=(a),_ed=(b);i<_ed;i++)
#define per(i,a,b) for (int i=(b)-1,_ed=(a);i>=_ed;i--)
#define vsort(v)   sort(v.begin(),v.end())
#define siz(x) ((int)(x).size())
#define ll long long
template <class T> inline T gcd(T a, T b) { if (b == 0)return a; return gcd(b, a%b); }

using namespace std;



int main() {
#ifdef debug 
	freopen("a.txt", "r", stdin);
#endif
	string  s;
	cin >> s;
	rep(i, 0, 4) {
		cout << s[i];
	}
	cout << " ";
	rep(i, 4, 12) {
		cout << s[i];
	}
	cout << endl;


	return 0;
}

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