Submission

Score: 0

User: Monasm

Problemset: B.Shuffle

Language: cpp

Time: 0.002 second

Submitted On: 2026-04-12 13:43:10

#include <iostream>
#include <vector>
#include <string>

using namespace std;

void solve() {
    int M;
    if (!(cin >> M)) return;
    string S;
    getline(cin >> ws, S);

    vector<int> posN, posK;
    for (int i = 0; i < (int)S.length(); i++) {
        if (S[i] == 'N') posN.push_back(i);
        else if (S[i] == 'K') posK.push_back(i);
    }

    int total_gaps = 0;
    for (size_t i = 0; i < posN.size(); i++) {
        total_gaps ^= (abs(posN[i] - posK[i]) - 1);
    }

    if (total_gaps != 0) cout << "YES" << "\n";
    else cout << "NO" << "\n";
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int T;
    if (cin >> T) {
        while (T--) solve();
    }
    return 0;
}