Submission #679985

#	Time	Username	Problem	Language	Result	Execution time	Memory
679985		Beverita	Football (info1cup20_football)	C++17	26 / 100	209 ms	468 KiB

football

#include <bits/stdc++.h>

using namespace std;

unsigned long long TestCases, n, k, sum;
vector<int> v;
bool ok;

void read() {
    sum = 0;
    v.clear();
    cin >> n >> k;
    for (int i = 0; i < n; ++i) {
        int x;
        cin >> x;
        sum += x;
        if (x != 1)v.push_back(x);
    }
}

bool Sum() {
    unsigned long long val = 0;
    for (int i = 0; i < v.size(); ++i) {
        v[i] /= 2;
        val += v[i];
    }
    if (val % 2 == 0)return true;
    return false;
}

void solve() {
    while (Sum() && k > 1) {
        ok = (1 - ok);
        k /= 2;
    }
}

int main() {

    cin >> TestCases;

    while (TestCases--) {
        read();
        if (sum % 2 == 1) {
            cout << 1 ;
            continue;
        } else if (k == 1) {
            cout << 0;
            continue;
        }

        solve();

        cout << 1 - ok;
    }

    return 0;
}

Compilation message (stderr)

football.cpp: In function 'void read()':
football.cpp:13:23: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare]
   13 |     for (int i = 0; i < n; ++i) {
      |                     ~~^~~
football.cpp: In function 'bool Sum()':
football.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for (int i = 0; i < v.size(); ++i) {
      |                     ~~^~~~~~~~~~

• Subtask 1: 26 / 26
• Subtask 2: 0 / 8
• Subtask 3: 0 / 11
• Subtask 4: 0 / 8
• Subtask 5: 0 / 16
• Subtask 6: 0 / 16
• Subtask 7: 0 / 7
• Subtask 8: 0 / 8