#include <bits/stdc++.h>
#define all(x) (x).begin(), (x).end()
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pii;
ll n, a[1000009];
vector<pii> old, cur;
ll ans = 0;
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
//freopen("in.txt", "r", stdin);
//freopen("out.txt", "w", stdout);
cin >> n;
old.resize(n);
for(ll i = 0; i < n; ++i)
cin >> old[i].ff;
for(ll bit = 0; bit < 34; ++bit){
for(auto u : old)
if((u.ff&(1<<bit)) == 0)
cur.pb(u);
for(auto u : old)
if((u.ff&(1<<bit)))
cur.pb({u.ff, u.ss+(1LL<<bit)});
ll i1, i2, i3;
i1 = i2 = i3 = n-1;
ll cnt = 0;
for(ll i = 0; i < n; ++i){
i1 = max(i1, i-1);
i2 = max(i2, i-1);
i3 = max(i3, i-1);
while(i1 >= i && cur[i].ss+cur[i1].ss >= (1LL<<bit))
--i1;
while(i2 >= i && cur[i].ss+cur[i2].ss >= (1LL<<(bit+1)))
--i2;
while(i3 >= i && cur[i].ss+cur[i3].ss >= (1LL<<(bit+1))+(1LL<<bit))
--i3;
cnt += i2-i1+n-1-i3;
}
if(cnt%2)
ans += (1<<bit);
swap(old, cur);
cur.clear();
}
cout << ans << '\n';
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
4 ms |
512 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
502 ms |
32612 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
502 ms |
32612 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
4 ms |
512 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
4 ms |
512 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |