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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#108540#6506. Chase Game 3keainie#WA 31ms1500kbC++14429b2023-05-25 14:18:052023-05-25 14:18:56

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-05-25 14:18:56]
  • 评测
  • 测评结果:WA
  • 用时:31ms
  • 内存:1500kb
  • [2023-05-25 14:18:05]
  • 提交

answer

#include <cstdio>

const int N = 4e5 + 10;
int n, a[N];

void work()
{
	scanf("%d", &n);
	for (int i = 1; i <= n; ++ i) scanf("%d", &a[i]);
	if (n <= 3) return puts("Yes"), void();
	bool flag1 = true, flag2 = true;
	for (int i = 1; i <= n; ++ i) flag1 &= a[i] == i, flag2 &= a[i] == n - i + 1;
	puts(flag1 || flag2 ? "Yes" : "No");
}

int main()
{
	int T;
	scanf("%d", &T);
	while (T --) work();
	return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 1492kb

input:

5
2
1 2
3
2 3 1
4
1 4 3 2
5
1 5 2 3 4
6
1 2 3 4 5 6

output:

Yes
Yes
No
No
Yes

result:

ok 5 token(s): yes count is 3, no count is 2

Test #2:

score: 0
Accepted
time: 1ms
memory: 1404kb

input:

8
2
1 2
2
2 1
3
1 2 3
3
3 1 2
3
2 1 3
3
2 3 1
3
3 2 1
3
1 3 2

output:

Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

result:

ok 8 token(s): yes count is 8, no count is 0

Test #3:

score: -100
Wrong Answer
time: 31ms
memory: 1500kb

input:

100000
4
4 1 3 2
4
3 2 4 1
4
3 2 1 4
4
2 4 3 1
4
1 2 3 4
4
2 3 1 4
4
1 3 4 2
4
3 4 1 2
4
1 3 2 4
4
1 4 3 2
4
3 4 2 1
4
3 2 4 1
4
4 2 3 1
4
3 2 4 1
4
4 1 2 3
4
3 2 1 4
4
4 1 3 2
4
1 3 4 2
4
1 4 2 3
4
2 4 3 1
4
2 3 1 4
4
4 2 3 1
4
2 1 3 4
4
3 1 2 4
4
1 2 3 4
4
4 3 2 1
4
3 4 1 2
4
1 3 2 4
4
4 2 1 3
4
3...

output:

No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
Yes
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
...

result:

wrong answer expected YES, found NO [1st token]