QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#608169 | #8520. Xor Partitions | BlackPanda | WA | 2ms | 10568kb | C++14 | 668b | 2024-10-03 19:18:37 | 2024-10-03 19:18:39 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll p = 1e9 + 7;
const int MAXN = 3e5 + 7;
ll a[MAXN];
ll pre[MAXN];
ll dp[MAXN];
void get_ans(int n)
{
memset(dp , 0 , sizeof(dp));
memset(pre , 0 , sizeof(pre));
dp[0] = 1;
for(int i = 1 ; i <= n ; i++)
{
pre[i] = pre[i - 1] ^ a[i];
}
for(int i = 1 ; i <= n ; i++)
{
for(int j = 0 ; j <= i - 1 ; j++)
{
dp[i] += (dp[j] % p * (pre[i] ^ pre[j] % p)) % p;
dp[i] %= p;
}
}
}
int main()
{
int n;
scanf("%d" , &n);
for(int i = 1 ; i <= n ; i++)
{
scanf("%lld" , &a[i]);
}
get_ans(n);
printf("%lld" , dp[n]);
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 10568kb
input:
4 7 3 1 2
output:
170
result:
ok 1 number(s): "170"
Test #2:
score: 0
Accepted
time: 2ms
memory: 10244kb
input:
1 0
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 0
Accepted
time: 2ms
memory: 9324kb
input:
1 1
output:
1
result:
ok 1 number(s): "1"
Test #4:
score: 0
Accepted
time: 0ms
memory: 9068kb
input:
3 1 2 3
output:
16
result:
ok 1 number(s): "16"
Test #5:
score: 0
Accepted
time: 1ms
memory: 8512kb
input:
4 0 1 0 1
output:
2
result:
ok 1 number(s): "2"
Test #6:
score: -100
Wrong Answer
time: 2ms
memory: 8932kb
input:
562 918479109239293921 960173570446350728 374394588863436385 418106819278123099 473761712658352147 662782574081105364 824954323015093862 827581845536521847 184394794881199801 820907621998888642 606529830885621237 961790689782125501 582742201855597942 337901250755571075 287706594894797714 18578215893...
output:
689887511
result:
wrong answer 1st numbers differ - expected: '641941658', found: '689887511'