| Task: | Sorting |
| Sender: | taulant |
| Submission time: | 2021-01-31 16:11:46 +0200 |
| Language: | C++11 |
| Status: | READY |
| Result: | 100 |
| group | verdict | score |
|---|---|---|
| #1 | ACCEPTED | 36 |
| #2 | ACCEPTED | 64 |
| test | verdict | time | group | |
|---|---|---|---|---|
| #1 | ACCEPTED | 0.01 s | 1, 2 | details |
| #2 | ACCEPTED | 0.01 s | 2 | details |
| #3 | ACCEPTED | 0.01 s | 1, 2 | details |
| #4 | ACCEPTED | 0.01 s | 1, 2 | details |
Code
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define endl "\n"
int32_t main(){
ios::sync_with_stdio(0); cin.tie(0);
int t; cin >> t;
vector<int> a = {3, 4, 1, 2};
while(t--){
int n; cin >> n;
vector<int> v(n);
for(int& i:v) cin >> i;
int y = 1;
for(int i=0; i<n-1; ++i){
if(v[i] > v[i+1]) y = 0;
}
if(v == a) y = 1;
if(n > 4){
y = 1;
for(int i=0; i<n; ++i) for(int j=i+1; j<n; ++j) y ^= v[i]>v[j];
}
cout << (y? "YES" : "NO") << endl;
}
}
Test details
Test 1
Group: 1, 2
Verdict: ACCEPTED
| input |
|---|
| 153 1 1 2 1 2 ... |
| correct output |
|---|
| YES YES NO NO NO ... |
| user output |
|---|
| YES YES NO NO NO ... |
Test 2
Group: 2
Verdict: ACCEPTED
| input |
|---|
| 1000 59 35 29 32 50 11 15 9 21 19 45 2... |
| correct output |
|---|
| YES NO YES NO YES ... |
| user output |
|---|
| YES NO YES NO YES ... |
Test 3
Group: 1, 2
Verdict: ACCEPTED
| 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 NO YES ... |
Test 4
Group: 1, 2
Verdict: ACCEPTED
| 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 |
|---|
| NO NO YES NO YES ... |