Submission #584381

#	Time	Username	Problem	Language	Result	Execution time	Memory
584381		Blagoj	Three Friends (BOI14_friends)	C++14	35 / 100	1082 ms	7400 KiB

friends

#include <bits/stdc++.h>
using namespace std;
int main()
{
    cin.tie(0);
    ios::sync_with_stdio(0);
    int sz;
    cin >> sz;
    string u;
    cin >> u;
    if (sz % 2 == 0)
    {
        cout << "NOT POSSIBLE";
        return 0;
    }
    map<char, int>mp;
    for (int i = 0; i < sz; i++)
    {
        mp[u[i]]++;
    }
    int result = 0;
    string kraj, l = "";
    set<string>s;
    for (int i = 0; i < sz; i++)
    {
        if (mp[u[i]] % 2 != 0)
        {
            string temp = l + u.substr(i + 1);
            string temp1 = temp.substr(0, sz / 2), temp2 = temp.substr(sz / 2);
            if (temp1 == temp2 && s.count(temp1) == 0)
            {
                result++;
                if (result > 1)
                {
                    cout << "NOT UNIQUE";
                    return 0;
                }
                kraj = temp1;
                s.insert(temp1);
            }
        }
        l += u[i];
    }
    if (result == 0)
    {
        cout << "NOT POSSIBLE";
        return 0;
    }
    cout << kraj;
    return 0;
}

• Subtask 1: 35 / 35
• Subtask 2: 0 / 65