CSES - Datatähti Open 2021 - Results
Submission details
Task:Sorting
Sender:ritul_kr_singh
Submission time:2021-01-30 19:43:53 +0200
Language:C++ (C++11)
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

#include <bits/stdc++.h>
using namespace std;
//#define int long long
signed main(){
ios_base::sync_with_stdio(false); cin.tie(nullptr);
int t; cin >> t;
while(t--){
int n, x; cin >> n;
int a[n+1], sum = 0;
for(int i=1; i<=n; ++i){
cin >> x;
a[i] = x;
if(i>1 && a[i]==i-1 && a[i-1]==i) ++sum;
sum += abs(i-x);
}
if(sum&1) cout << "NO\n";
else cout << "YES\n";
}
}

Test details

Test 1

Group: 1, 2

Verdict:

input
153
1
1
2
1 2
...

correct output
YES
YES
NO
NO
NO
...

user output
YES
YES
NO
NO
YES
...
Truncated

Test 2

Group: 2

Verdict:

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

correct output
YES
NO
YES
NO
YES
...

user output
YES
YES
YES
YES
YES
...
Truncated

Test 3

Group: 1, 2

Verdict:

input
720
6
1 6 4 5 2 3
6
6 3 2 1 5 4
...

correct output
YES
NO
NO
NO
YES
...

user output
YES
NO
NO
YES
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
...

correct output
NO
NO
YES
NO
YES
...

user output
YES
YES
YES
YES
YES
...
Truncated