Submission #972241

#	Time	Username	Problem	Language	Result	Execution time	Memory
972241		penguin133	Football (info1cup20_football)	C++17	100 / 100	29 ms	1500 KiB

football

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define pi pair<int, int>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());

int n, k, A[300005];

void solve(){
	cin >> n >> k;
	for(int i = 1; i <= n; i++)cin >> A[i];
	for(int i = 0; (1ll << i) <= k; i++){
		int x = (1ll << i);
		int ans = 0, ans2 = 0;
		for(int j = 1; j <= n; j++)ans += (A[j] + x - 1) / x, ans2 += A[j] / x;
		if(ans2 % 2){
			cout << 1;
			return;
		}
	}
	cout << 0;
}

main(){
	ios::sync_with_stdio(0);cin.tie(0);
	int tc = 1;
	cin >> tc;
	for(int tc1=1;tc1<=tc;tc1++){
		// cout << "Case #" << tc1 << ": ";
		solve();
	}
}

Compilation message (stderr)

football.cpp:31:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   31 | main(){
      | ^~~~

• 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