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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#149536#4797. Xormites8BQube#WA 1ms3592kbC++141.1kb2023-08-24 19:58:462023-08-24 19:58:50

Judging History

你现在查看的是最新测评结果

  • [2023-08-24 19:58:50]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:3592kb
  • [2023-08-24 19:58:46]
  • 提交

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

Tip: Click on the bar to expand more detailed information

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'