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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#543828#8520. Xor PartitionsHTensor#WA 0ms3824kbC++17923b2024-09-01 21:31:592024-09-01 21:31:59

Judging History

你现在查看的是最新测评结果

  • [2024-09-01 21:31:59]
  • 评测
  • 测评结果:WA
  • 用时:0ms
  • 内存:3824kb
  • [2024-09-01 21:31:59]
  • 提交

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

Tip: Click on the bar to expand more detailed information

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'