Submission #752107

#	Time	Username	Problem	Language	Result	Execution time	Memory
752107		Stickfish	Football (info1cup20_football)	C++17	100 / 100	125 ms	3040 KiB

football

#include <iostream>
#include <bitset>
#include <vector>
using namespace std;

bool get_ans(vector<int> a, int k) {
    int n = a.size();
    int bt = 0;
    for (int i = 0; i < n; ++i)
        bt ^= a[i] & 1;
    if (bt)
        return true;
    if (k == 1)
        return false;
    // first to substract odd loses
    for (int i = 0; i < n; ++i)
        a[i] /= 2;
    return get_ans(a, k / 2);
}

signed main() {
    int t;
    cin >> t;
    vector<bool> ans(t);
    for (int i = 0; i < t; ++i) {
        int n, k;
        cin >> n >> k;
        vector<int> a(n);
        for (int j = 0; j < n; ++j)
            cin >> a[j];
        ans[i] = get_ans(a, k);
    }
    for (int i = 0; i < t; ++i)
        cout << ans[i];
    cout << '\n';
}

• Subtask 1: 26 / 26
• Subtask 2: 8 / 8
• Subtask 3: 11 / 11
• Subtask 4: 8 / 8
• Subtask 5: 16 / 16
• Subtask 6: 16 / 16
• Subtask 7: 7 / 7
• Subtask 8: 8 / 8