QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#149536 | #4797. Xormites | 8BQube# | WA | 1ms | 3592kb | C++14 | 1.1kb | 2023-08-24 19:58:46 | 2023-08-24 19:58:50 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define X first
#define Y second
#define ALL(v) v.begin(), v.end()
#define SZ(a) ((int)a.size())
#define pb push_back
int arr[50005];
bool check(int l, int r) {
int sum = accumulate(arr + l, arr + r + 1, 0);
if (sum != r - l + 1) return true;
if ((sum / 2) & 1) return true;
return false;
}
void solve() {
int n, xorsum = 0;
cin >> n;
for (int i = 1; i <= n; ++i)
cin >> arr[i], xorsum ^= arr[i];
if (xorsum == 0) {
cout << "Draw\n";
return;
}
if (n % 2 == 0 || n == 1) {
cout << "First\n";
return;
}
int high = __lg(xorsum);
for (int i = 1; i <= n; ++i)
arr[i] = arr[i] >> high & 1;
if (arr[1] == 1 && !check(2, n))
cout << "First\n";
else if (arr[n] == 1 && !check(1, n - 1))
cout << "First\n";
else
cout << "Second\n";
}
int main() {
ios::sync_with_stdio(0), cin.tie(0);
int t;
cin >> t;
while (t--) {
solve();
}
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3488kb
input:
3 2 3 3 2 3 5 3 4 4 4
output:
Draw First Second
result:
ok 3 lines
Test #2:
score: 0
Accepted
time: 1ms
memory: 3464kb
input:
12 10 1 3 1 3 3 3 2 1 3 3 10 1 3 3 3 1 3 2 1 1 3 9 1 2 3 3 3 1 2 2 3 9 1 3 2 1 3 3 2 2 2 10 3 2 2 2 3 3 1 2 1 2 10 2 1 2 3 3 3 3 2 3 2 10 2 1 1 3 3 1 1 1 2 1 10 2 1 1 1 1 1 1 2 2 3 10 2 1 2 1 1 2 2 3 3 3 9 2 2 1 1 3 3 1 2 3 9 1 3 3 2 2 2 2 3 2 10 1 1 1 1 1 2 2 2 1 2
output:
First First Second Second First First Draw First First Draw Draw Draw
result:
ok 12 lines
Test #3:
score: 0
Accepted
time: 1ms
memory: 3592kb
input:
12 9 3 4 1 5 2 1 5 3 1 10 6 2 4 5 4 2 5 7 5 6 9 5 3 2 1 2 4 4 1 4 9 5 7 6 2 7 2 5 7 4 10 7 5 1 6 7 1 5 1 4 5 10 4 2 6 2 7 2 2 2 3 5 10 7 3 4 7 4 4 2 3 7 5 9 3 3 7 1 6 3 7 2 3 10 5 3 7 7 2 6 4 7 3 1 10 1 7 4 2 4 2 6 6 4 4 10 4 1 3 4 4 4 5 4 1 7 9 4 3 4 7 1 6 2 2 5
output:
Second First Second Second First First First Second First First First Second
result:
ok 12 lines
Test #4:
score: -100
Wrong Answer
time: 1ms
memory: 3476kb
input:
12 9 1 5 7 1 4 7 7 3 1 9 2 7 3 2 1 5 1 6 6 10 3 4 6 6 4 5 4 7 5 4 9 2 3 1 5 7 3 6 3 3 10 1 2 5 2 2 6 3 7 7 3 9 2 3 1 1 5 5 2 6 2 9 6 6 4 1 5 4 6 1 2 10 2 6 2 3 6 7 7 4 2 5 10 3 4 5 5 2 1 1 2 4 1 9 7 5 5 2 3 7 7 1 1 10 7 1 3 7 3 4 4 1 7 5 10 2 6 5 7 3 6 1 3 3 3
output:
Second Second First Second Draw Second Second Draw First Second First First
result:
wrong answer 10th lines differ - expected: 'First', found: 'Second'