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Datatähti Open 2021

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CSES - Datatähti Open 2021 - Results
Submission details
Task:Sorting
Sender:lolok123
Submission time:2021-01-31 12:50:48 +0200
Language:C++ (C++17)
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
Test results
testverdicttimegroup
#10.01 s1, 2details
#20.01 s2details
#30.01 s1, 2details
#40.01 s1, 2details

Code

#define MOD 1000000007
#include <bits/stdc++.h>
#include <numeric>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
 
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
 
	int T;
	cin>>T;
	for(int T_Case=1;T_Case<=T;++T_Case){
		int n,c[2]={0},e[2];
		cin>>n;
		vector<int> a(n);
		for(int i=0; i<n; ++i){
			cin>>a[i];
			c[0]+=!(i&1)&&(a[i]&1);
			c[1]+=(i&1)&&!(a[i]&1);
		}
		e[0]=(n+1)/2-c[0];
		e[1]=n/2-c[1];
		if(!(e[0]&1)&&!(e[1]&1)){
			cout<<"YES"<<'\n';
		}
		else{
			cout<<"NO"<<'\n';
		}
	}
}

Test details

Test 1

Group: 1, 2

Verdict:

input
153
1
1
2
1 2
...
view save

correct output
YES
YES
NO
NO
NO
...
view save

user output
YES
YES
NO
NO
NO
...
Truncated

Test 2

Group: 2

Verdict:

input
1000
59
35 29 32 50 11 15 9 21 19 45 2...
view save

correct output
YES
NO
YES
NO
YES
...
view save

user output
NO
YES
YES
NO
YES
...
Truncated

Test 3

Group: 1, 2

Verdict:

input
720
6
1 6 4 5 2 3
6
6 3 2 1 5 4
...
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correct output
YES
NO
NO
NO
YES
...
view save

user output
YES
YES
YES
NO
YES
...
Truncated

Test 4

Group: 1, 2

Verdict:

input
1000
8
7 4 2 8 6 3 5 1
8
3 8 2 7 5 4 6 1
...
view save

correct output
NO
NO
YES
NO
YES
...
view save

user output
YES
YES
YES
NO
YES
...
Truncated

Tasks

A Greater Integers-B Split in Three-C Sorting-D Distances-E Programmers-F Polygonal Chain-

Submissions (lolok123)

2021-02-02 12:58:42 1003:43:32 03:36:46 0