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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#201124#3482. sortableSoulmate100327ms1776kbC++11963b2024-01-21 09:32:382024-01-21 12:04:10

answer

#include<bits/stdc++.h>
using namespace std;
bool f(int n, vector<int>& a) 
{
    stack<int> s;
    queue<int> b;

    int k=1;

    for (int i=0;i<n;i++) 
	{
        while (!s.empty()&&s.top()==k) 
		{
            b.push(s.top());
            s.pop();
            k++;
        }

        if (a[i]==k) 
		{
            b.push(a[i]);
            k++;
        } 
		else 
		{
            s.push(a[i]);
        }
    }

    while (!s.empty()&&s.top()==k) 
	{
        b.push(s.top());
        s.pop();
        k++;
    }

    return b.size()==n;
}

int main() 
{
    int q;
    cin>>q;

    while (q--) 
	{
        int n;
        cin>>n;

        vector<int> a(n);
        for (int i=0;i<n;i++) 
		{
            cin>>a[i];
        }

        bool res=f(n,a);

        if (res) 
		{
            cout<<"YES"<<endl;
        } 
		else 
		{
            cout<<"NO"<<endl;
        }
    }

    return 0;
}

Details

小提示:点击横条可展开更详细的信息

Test #1:

score: 10
Accepted
time: 1ms
memory: 1228kb

input:

10
10
4 2 1 3 8 7 6 5 9 10
10
3 7 6 4 8 10 5 9 2 1
10
1 3 2 4 8 5 7 6 10 9
10
8 7 1 2 6 5 4 3 10 9
1...

output:

YES
NO
YES
YES
YES
YES
YES
YES
NO
NO

result:

ok 10 lines

Test #2:

score: 10
Accepted
time: 0ms
memory: 1232kb

input:

10
10
10 6 4 8 1 3 9 5 2 7
10
2 1 3 9 8 7 4 5 6 10
10
1 9 6 2 3 7 4 8 10 5
10
3 1 2 5 4 6 10 8 7 9
1...

output:

NO
YES
NO
YES
YES
YES
YES
YES
YES
YES

result:

ok 10 lines

Test #3:

score: 10
Accepted
time: 0ms
memory: 1232kb

input:

10
10
9 8 7 6 5 4 2 1 3 10
10
7 10 2 5 1 3 8 4 6 9
10
4 6 2 7 8 9 3 10 5 1
10
5 4 1 2 3 6 7 8 9 10
1...

output:

YES
NO
NO
YES
NO
NO
YES
NO
YES
YES

result:

ok 10 lines

Test #4:

score: 10
Accepted
time: 48ms
memory: 1592kb

input:

10
55985
29565 29563 29562 29352 29346 29328 29326 29325 29324 29323 29320 29319 29314 29313 29312 2...

output:

YES
NO
YES
YES
YES
YES
YES
NO
YES
NO

result:

ok 10 lines

Test #5:

score: 10
Accepted
time: 46ms
memory: 1596kb

input:

10
7763
3680 277 7608 5750 4337 7049 5804 3272 1940 4138 656 4368 3918 6305 3327 5872 4032 2233 5256...

output:

NO
YES
NO
YES
YES
NO
NO
YES
YES
YES

result:

ok 10 lines

Test #6:

score: 10
Accepted
time: 48ms
memory: 1776kb

input:

10
71974
28234 36059 56781 31385 50663 31905 45178 38510 58367 71478 55134 3951 16243 44225 5711 699...

output:

NO
YES
NO
NO
NO
YES
YES
YES
NO
NO

result:

ok 10 lines

Test #7:

score: 10
Accepted
time: 47ms
memory: 1612kb

input:

10
51542
1512 25827 42622 23126 27057 8283 46006 27813 21072 29589 10487 8260 37934 48675 27116 4708...

output:

NO
NO
YES
YES
YES
NO
NO
NO
YES
NO

result:

ok 10 lines

Test #8:

score: 10
Accepted
time: 49ms
memory: 1592kb

input:

10
61442
27627 49016 59575 37948 60082 14313 44305 48280 31222 36746 30283 42328 23889 42782 25771 4...

output:

NO
NO
NO
YES
YES
YES
NO
YES
YES
NO

result:

ok 10 lines

Test #9:

score: 10
Accepted
time: 43ms
memory: 1564kb

input:

10
17970
3118 3116 3114 3113 3108 3107 3106 2092 2091 2089 2088 2087 2085 2081 2080 2079 2077 2067 2...

output:

YES
YES
NO
NO
YES
NO
NO
YES
NO
YES

result:

ok 10 lines

Test #10:

score: 10
Accepted
time: 45ms
memory: 1720kb

input:

10
64613
49144 62298 12440 25315 54016 17872 58100 38381 41434 10557 57214 23632 29057 62471 48206 2...

output:

NO
YES
NO
NO
NO
YES
NO
NO
NO
YES

result:

ok 10 lines