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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#602909 | #8520. Xor Partitions | ShwStone | WA | 2ms | 8412kb | C++14 | 744b | 2024-10-01 13:27:58 | 2024-10-01 13:28:00 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
const int MAXN(3e5 + 5);
const long long MOD(1e9 + 7);
int n;
long long a[MAXN];
long long dp[MAXN], sum[MAXN][64][2];
int main() {
scanf("%d", &n);
for (int i = 1; i <= n; i++) {
scanf("%lld", a + i);
}
dp[0] = 1;
for (int j = 0; j < 64; j++) sum[0][j][0] = 1;
for (int i = 1; i <= n; i++) {
for (int j = 0; j < 64; j++) {
long long b = (a[i] >> j) & 1ll;
(dp[i] += (sum[i - 1][j][b ^ 1] << j)) %= MOD;
}
for (int j = 0; j < 64; j++) {
long long b = (a[i] >> j) & 1ll;
sum[i][j][b] = sum[i - 1][j][0];
sum[i][j][b ^ 1] = sum[i - 1][j][1];
(sum[i][j][0] += dp[i]) %= MOD;
}
continue;
}
printf("%lld\n", dp[n]);
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 7892kb
input:
4 7 3 1 2
output:
170
result:
ok 1 number(s): "170"
Test #2:
score: 0
Accepted
time: 1ms
memory: 7964kb
input:
1 0
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 0
Accepted
time: 1ms
memory: 7884kb
input:
1 1
output:
1
result:
ok 1 number(s): "1"
Test #4:
score: 0
Accepted
time: 1ms
memory: 8052kb
input:
3 1 2 3
output:
16
result:
ok 1 number(s): "16"
Test #5:
score: 0
Accepted
time: 0ms
memory: 7968kb
input:
4 0 1 0 1
output:
2
result:
ok 1 number(s): "2"
Test #6:
score: -100
Wrong Answer
time: 2ms
memory: 8412kb
input:
562 918479109239293921 960173570446350728 374394588863436385 418106819278123099 473761712658352147 662782574081105364 824954323015093862 827581845536521847 184394794881199801 820907621998888642 606529830885621237 961790689782125501 582742201855597942 337901250755571075 287706594894797714 18578215893...
output:
-457423506
result:
wrong answer 1st numbers differ - expected: '641941658', found: '-457423506'