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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
#108536#6506. Chase Game 3keainie#TL 8ms13040kbC++14497b2023-05-25 14:08:132023-05-25 14:08:14

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 14:08:14]
  • 评测
  • 测评结果:TL
  • 用时:8ms
  • 内存:13040kb
  • [2023-05-25 14:08:13]
  • 提交

answer

#include <iostream>
#include <cstdio>
#include <vector>

const int N = 4e5 + 10;
int n, a[N];
std::vector<int> g[N];
bool abl[N];

void work()
{
	std::cin >> n;
	for (int i = 1; i <= n; ++ i) abl[i] = false;
	for (int i = 1; i <= n; ++ i) scanf("%d", &a[i]);
	bool flag = true;
	for (int i = 1; i <= n; ++ i) flag &= a[i] == i;
	if (flag) return puts("Yes"), void();
	puts(n <= 3 ? "Yes" : "No");
}

int main()
{
	int T;
	std::cin >> T;
	while (T --) work();
	return 0;
}

详细

Test #1:

score: 100
Accepted
time: 8ms
memory: 12744kb

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: 4ms
memory: 13040kb

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
Time Limit Exceeded

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
No
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
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
No
No
No
No
No
No
No
No
No
No
No
No
No
No...

result: