제출 #1285694

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1285694		Gadir_2880	XOR Sum (info1cup17_xorsum)	C++20	7 / 100	1696 ms	2828 KiB

xorsum

//The Rumbling starts here:

//#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math")
//pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

#define debug(n,m) cout<<"["<<#n<<"]->"<<n<<m
#include<bits/stdc++.h>
#define int long long
#define all(x) x.begin(),x.end() 
#define pb push_back
using namespace std;

const int N=3e5+5;
const int mod=1e9+7;
const int inf=(1ll<<55)-1;

int a[N];

void levi() {
  int n;
  cin>>n;
  for (int i=1;i<=n;i++) {
    cin>>a[i];
  }
  int sum=0;
  for (int i=1;i<=n;i++) {
    for (int j=i;j<=n;j++) {
      sum^=(a[i]+a[j]);
    }
  }
  cout<<sum<<'\n';
}

int32_t main() {
  ios::sync_with_stdio(0);
  cin.tie(0);int t=1;
  #ifdef tests
  cin>>t;
  #endif
  while(t--) levi();
}

• Subtask 1: 7 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 21
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23