Task: | Sorting |
Sender: | tutis |
Submission time: | 2021-01-30 19:08:47 +0200 |
Language: | C++ (C++11) |
Status: | READY |
Result: | 0 |
group | verdict | score |
---|---|---|
#1 | WRONG ANSWER | 0 |
#2 | WRONG ANSWER | 0 |
test | verdict | time | group | |
---|---|---|---|---|
#1 | WRONG ANSWER | 0.01 s | 1, 2 | details |
#2 | WRONG ANSWER | 0.01 s | 2 | details |
#3 | ACCEPTED | 0.01 s | 1, 2 | details |
#4 | ACCEPTED | 0.01 s | 1, 2 | details |
Code
/*input321 252 3 5 1 442 4 3 1*/#pragma GCC optimize ("O3")#pragma GCC target ("avx2")#include <bits/stdc++.h>#include <ext/pb_ds/assoc_container.hpp>using namespace std;using namespace __gnu_pbds;template<typename T>using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;template<typename T, typename X>using ordered_map = tree<T, X, less<T>, rb_tree_tag, tree_order_statistics_node_update>;template<typename T, typename X>using fast_map = cc_hash_table<T, X>;//using ull = __uint128_t;using ull = unsigned long long;using ll = long long;using ld = long double;mt19937_64 rng(123);const ll mod = 1000000007;int main(){ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);int t;cin >> t;while (t--){int n;cin >> n;int p[n + 1];p[0] = 0;for (int i = 1; i <= n; i++)cin >> p[i];ll s = 0;for (int i = 1; i <= n; i++)for (int j = 1; j < i; j++)if (p[j] > p[i])s++;if (s % 2 == 1)cout << "NO\n";else {if (n <= 4){if (is_sorted(p, p + n + 1))cout << "YES\n";else{if (n == 4 && p[1] == 2 && p[2] == 1 && p[3] == 4 && p[4] == 3){cout << "YES\n";}elsecout << "NO\n";}}elsecout << "YES\n";}}}
Test details
Test 1
Group: 1, 2
Verdict: WRONG ANSWER
input |
---|
153 1 1 2 1 2 ... |
correct output |
---|
YES YES NO NO NO ... |
user output |
---|
YES YES NO NO NO ... Truncated |
Test 2
Group: 2
Verdict: WRONG ANSWER
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 ... Truncated |
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 ... Truncated |
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 ... Truncated |