Task: | Sorting |
Sender: | Victor |
Submission time: | 2021-01-30 17:35:04 +0200 |
Language: | C++ (C++17) |
Status: | READY |
Result: | 36 |
group | verdict | score |
---|---|---|
#1 | ACCEPTED | 36 |
#2 | TIME LIMIT EXCEEDED | 0 |
test | verdict | time | group | |
---|---|---|---|---|
#1 | ACCEPTED | 0.01 s | 1, 2 | details |
#2 | TIME LIMIT EXCEEDED | -- | 2 | details |
#3 | ACCEPTED | 0.01 s | 1, 2 | details |
#4 | ACCEPTED | 0.27 s | 1, 2 | details |
Code
#include <bits/stdc++.h>using namespace std;#define rep(i, a, b) for (int i = a; i < (b); ++i)#define per(i, a, b) for (int i = a - 1; i >= (b); --i)#define trav(a, x) for (auto &a : x)#define all(x) x.begin(), x.end()#define sz(x) x.size()#define pb push_back#define umap unordered_map#define uset unordered_set#define INF 1000000000typedef pair<int, int> ii;typedef pair<int, ii> iii;typedef vector<int> vi;typedef vector<ii> vii;typedef long long ll;int main() {ios::sync_with_stdio(0);cin.tie(NULL);pair<string, uset<string>> vis[1001];umap<string, int> prev;int tc, n;cin >> tc;while (tc--) {cin >> n;string nums(n, 0);rep(i, 0, n) cin >> nums[i];if (prev.count(nums)) {cout << vis[prev[nums]].first<<'\n';continue;}queue<string> q;q.push(nums);vis[tc].second.insert(nums);string ans = "NO", goal = string(n, ' ');rep(i, 0, n) goal[i] = '1' + i;while (!q.empty()) {nums = q.front();q.pop();prev.emplace(nums, tc);if (nums == goal) {ans = "YES";while (!q.empty()) q.pop();continue;}rep(i, 0, n - 3) {string next;rep(j, i + 2, n - 1) {next = nums;swap(next[i], next[j]);swap(next[i + 1], next[j + 1]);if (!vis[tc].second.count(next)) {vis[tc].second.insert(next);q.push(next);}}}}vis[tc].first = ans;cout << ans << '\n';}return 0;}
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 ... Truncated |
Test 2
Group: 2
Verdict: TIME LIMIT EXCEEDED
input |
---|
1000 59 35 29 32 50 11 15 9 21 19 45 2... |
correct output |
---|
YES NO YES NO YES ... |
user output |
---|
(empty) |
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 |