Submission #514696

#	Time	Username	Problem	Language	Result	Execution time	Memory
514696		Theo830	Football (info1cup20_football)	C++17	100 / 100	43 ms	1984 KiB

football

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e9+7;
const ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ii,ll>
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Training
int main(void){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll t;
    cin>>t;
    while(t--){
        ll n,k;
        cin>>n>>k;
        ll sum = 0;
        ll arr[n];
        f(i,0,n){
            cin>>arr[i];
        }
        bool ok = 0;
        ll num = log2(k) + 1;
        f(j,0,num){
            ll sum = 0;
            f(i,0,n){
                sum += arr[i] % (1LL<<(j+1)) >= (1LL<<j);
            }
            ok |= sum % 2;
        }
        cout<<ok;
    }
}

Compilation message (stderr)

football.cpp: In function 'int main()':
football.cpp:33:12: warning: unused variable 'sum' [-Wunused-variable]
   33 |         ll sum = 0;
      |            ^~~

• 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