QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#543828 | #8520. Xor Partitions | HTensor# | WA | 0ms | 3824kb | C++17 | 923b | 2024-09-01 21:31:59 | 2024-09-01 21:31:59 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define int long long
constexpr int mod = 1e9 + 7;
void solve() {
int n;
cin >> n;
vector<int> a(n + 1);
for (int i = 1; i <= n; i++) {
cin >> a[i];
a[i] ^= a[i - 1];
}
vector<int> dp(n + 1);
array<array<int, 2>, 61> sum {};
for (int i = 0; i < 61; i++) {
sum[i][0] = 1;
}
for (int i = 1; i <= n; i++) {
for (int j = 0; j < 61; j++) {
dp[i] = (dp[i] + sum[j][!(a[i] >> j & 1)] * (1LL << j) % mod) % mod;
}
for (int j = 0; j < 61; j++) {
sum[j][a[i] >> j & 1] = (sum[j][a[i] >> j & 1] + dp[i]) % mod;
}
}
cout << dp[n] << "\n";
}
signed main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int t = 1;
while (t--) {
solve();
}
return 0;
}
/*
4
7 3 1 2
*/
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3532kb
input:
4 7 3 1 2
output:
170
result:
ok 1 number(s): "170"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3568kb
input:
1 0
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3824kb
input:
1 1
output:
1
result:
ok 1 number(s): "1"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3820kb
input:
3 1 2 3
output:
16
result:
ok 1 number(s): "16"
Test #5:
score: 0
Accepted
time: 0ms
memory: 3624kb
input:
4 0 1 0 1
output:
2
result:
ok 1 number(s): "2"
Test #6:
score: -100
Wrong Answer
time: 0ms
memory: 3624kb
input:
562 918479109239293921 960173570446350728 374394588863436385 418106819278123099 473761712658352147 662782574081105364 824954323015093862 827581845536521847 184394794881199801 820907621998888642 606529830885621237 961790689782125501 582742201855597942 337901250755571075 287706594894797714 18578215893...
output:
432527481
result:
wrong answer 1st numbers differ - expected: '641941658', found: '432527481'