Submission #44301

#	Time	Username	Problem	Language	Result	Execution time	Memory
44301		dhruvsomani	Three Friends (BOI14_friends)	C++14	35 / 100	1082 ms	2972 KiB

friends

#include <iostream>
#include <iomanip>
#include <fstream>

#include <cmath>
#include <string>

#include <algorithm>
#include <list>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

using namespace std;

int n;
string s, temp;
map<char, int> dict;

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);

	cin >> n;
	cin >> s;

	set<string> count;

	for (int i = 0; i < n; i++) dict[s[i]]++;

	for (int i = 0; i < n; i++) {
		int one, two;
		if (dict[s[i]] % 2 == 0) continue;
		if (i == 0) {
			one = 1;
			two = n/2+1;
		}
		else if (i <= n/2) {
			one = 0;
			two = n/2 + 1;
		}
		else {
			one = 0;
			two = n/2;
		}

		//cout << "i: " << i << " one: " << one << " two: " << two << endl;

		bool poss = true;
		temp = "";

		for (int j = 0; j < n/2; j++) {
			if (s[one] != s[two]) {
				poss = false;
				break;
			}
			temp += s[one];
			one++;
			two++;
			if (one == i) one++;
			if (two == i) two++;
		}
		
		if (poss) count.insert(temp);
	}

	if (count.size() == 0) cout << "NOT POSSIBLE\n";
	else if (count.size() == 1) cout << *(count.begin()) << endl;
	else cout << "NOT UNIQUE\n";

	return 0;
}

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