Submission #890877

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Source Code Expand

#include <stdio.h>
#include <string.h>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <map>
#include <iostream>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <utility>
using namespace std;

#define endl '\n'
#define FOR(i, a, b) for(int i=(a); i<(b); i++)
typedef pair<int, int> ii;
typedef long long LL;
typedef long double LD;


int main(int argc, char *argv[]){
    string s;
    while(cin>>s){
        string res = "";
        for(int i=0;i<4;i++){
            res.push_back(s[i]);
        }
        res.push_back(' ');
        for(int i=4;i<s.length();i++) res.push_back(s[i]);
        cout<<res<<endl;
    }
    return 0;
}

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