oj.uz

Submission #891122

# Submission time Handle Problem Language Result Execution time Memory
891122 2023-12-22T08:06:28 Z Nurislam Jail (JOI22_jail) C++14
21 / 100
 51 ms 7516 KB 
#include <bits/stdc++.h>
using namespace std;/*
<<<<It's never too late for a new beginning in your life>>>>
Today is hard
  tomorrow will worse
  but the day after tomorrow will be the sunshine..
 
HARD WORK BEATS TALENT WHEN TALENT DOESN'T WORK HARD............
Never give up  */
//The most CHALISHKANCHIK
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimize("Ofast,unroll-loops")
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
//~ #define int long long
typedef vector<int> vi;
typedef pair<int,int> pii;
typedef vector<pair<int,int> > vii;
const long long N = 1e5+50, inf = 1e18, mod = 1e9+7;
  vector<int>v[N],pred(N);
  vector<int>col(N),vis(N);
void dfs(int x,int pr){
	vis[x] = 1;
	for(auto to:v[x]){
		if(to==pr||col[to])continue;
		dfs(to,x);
	}
}
void solve(){
	int n,m;
	cin>>n;
	for(int i = 1;i<=n;i++){
		v[i].clear();
		vis[i] = 0;
		col[i] = 0;
	}
	for(int i = 1;i<n;i++){
		int a,b;
		cin>>a>>b;
		v[a].pb(b);
		v[b].pb(a);
	}
	cin>>m;
	vector<pii>g(m);
	for(int i = 0;i<m;i++){
		int a,b;
		cin>>a>>b;
		g[i] = {a, b};
	}
  	if(m<=6){
   	vector<int>ind;
   	for(int i = 0;i<m;i++)ind.pb(i);

   	do
   	{
		for(int i = 1;i<=n;i++)col[i] = 0;
		for(auto to:g){
			col[to.ff] += 1;
		}
		bool flag = true;
    	for(auto to:ind){
     		int a = g[to].ff;
     		int b = g[to].ss;
     		col[a]--;
     		for(int i = 1;i<=n;i++)vis[i] = 0;
		 		if(col[a]>=1){
		  			flag = false;
		  			break;
		 		}
				dfs(a,-1);
				col[b] ++;
				if(vis[b]==0){
					flag = false;
					break;
				}
			}
			if(flag){
				cout<<"Yes\n";
				return;
			}
		}while (next_permutation(all(ind)));
		
		cout<<"No\n";
  	}
  	else{
		sort(all(g));
		int mn = 1e9;
		for(int i = m-1;i>=0;i--){
			if(mn < g[i].ss){
				cout<<"No\n";
				return;
			}
			mn = min(mn, g[i].ss);
		}
		cout << "Yes\n";
  }
}
main(){
	ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
	int t = 1;
	cin >> t;
	while(t--){
		solve();
	}
}

Compilation message

jail.cpp:101:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  101 | main(){
      | ^~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4184 KB Output is correct
2 Correct 1 ms 3928 KB Output is correct
3 Correct 1 ms 3932 KB Output is correct
4 Correct 8 ms 3932 KB Output is correct
5 Correct 16 ms 3932 KB Output is correct
6 Correct 2 ms 3932 KB Output is correct
7 Correct 15 ms 3932 KB Output is correct
8 Correct 2 ms 3932 KB Output is correct
9 Correct 15 ms 4188 KB Output is correct
10 Runtime error 4 ms 7516 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 3928 KB Output is correct
2 Correct 1 ms 3932 KB Output is correct
3 Correct 2 ms 3932 KB Output is correct
4 Correct 2 ms 3932 KB Output is correct
5 Correct 2 ms 3932 KB Output is correct
6 Correct 2 ms 3928 KB Output is correct
7 Correct 2 ms 3932 KB Output is correct
8 Correct 2 ms 3932 KB Output is correct
9 Correct 2 ms 3932 KB Output is correct
10 Correct 2 ms 3928 KB Output is correct
11 Correct 2 ms 4184 KB Output is correct
12 Correct 2 ms 3932 KB Output is correct
13 Correct 1 ms 3932 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 3928 KB Output is correct
2 Correct 1 ms 3932 KB Output is correct
3 Correct 2 ms 3932 KB Output is correct
4 Correct 2 ms 3932 KB Output is correct
5 Correct 2 ms 3932 KB Output is correct
6 Correct 2 ms 3928 KB Output is correct
7 Correct 2 ms 3932 KB Output is correct
8 Correct 2 ms 3932 KB Output is correct
9 Correct 2 ms 3932 KB Output is correct
10 Correct 2 ms 3928 KB Output is correct
11 Correct 2 ms 4184 KB Output is correct
12 Correct 2 ms 3932 KB Output is correct
13 Correct 1 ms 3932 KB Output is correct
14 Correct 1 ms 3932 KB Output is correct
15 Correct 1 ms 3932 KB Output is correct
16 Correct 13 ms 3928 KB Output is correct
17 Correct 3 ms 3932 KB Output is correct
18 Correct 17 ms 3928 KB Output is correct
19 Correct 1 ms 3928 KB Output is correct
20 Correct 12 ms 3932 KB Output is correct
21 Correct 19 ms 4000 KB Output is correct
22 Correct 11 ms 3932 KB Output is correct
23 Correct 1 ms 3932 KB Output is correct
24 Correct 2 ms 3932 KB Output is correct
25 Correct 51 ms 3984 KB Output is correct
26 Correct 8 ms 3932 KB Output is correct
27 Correct 9 ms 3800 KB Output is correct
28 Correct 6 ms 3932 KB Output is correct

Subtask #4
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 3928 KB Output is correct
2 Correct 1 ms 3932 KB Output is correct
3 Correct 2 ms 3932 KB Output is correct
4 Correct 2 ms 3932 KB Output is correct
5 Correct 2 ms 3932 KB Output is correct
6 Correct 2 ms 3928 KB Output is correct
7 Correct 2 ms 3932 KB Output is correct
8 Correct 2 ms 3932 KB Output is correct
9 Correct 2 ms 3932 KB Output is correct
10 Correct 2 ms 3928 KB Output is correct
11 Correct 2 ms 4184 KB Output is correct
12 Correct 2 ms 3932 KB Output is correct
13 Correct 1 ms 3932 KB Output is correct
14 Correct 1 ms 3932 KB Output is correct
15 Correct 1 ms 3932 KB Output is correct
16 Correct 13 ms 3928 KB Output is correct
17 Correct 3 ms 3932 KB Output is correct
18 Correct 17 ms 3928 KB Output is correct
19 Correct 1 ms 3928 KB Output is correct
20 Correct 12 ms 3932 KB Output is correct
21 Correct 19 ms 4000 KB Output is correct
22 Correct 11 ms 3932 KB Output is correct
23 Correct 1 ms 3932 KB Output is correct
24 Correct 2 ms 3932 KB Output is correct
25 Correct 51 ms 3984 KB Output is correct
26 Correct 8 ms 3932 KB Output is correct
27 Correct 9 ms 3800 KB Output is correct
28 Correct 6 ms 3932 KB Output is correct
29 Correct 2 ms 4436 KB Output is correct
30 Incorrect 3 ms 4012 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 3928 KB Output is correct
2 Correct 1 ms 3932 KB Output is correct
3 Correct 2 ms 3932 KB Output is correct
4 Correct 2 ms 3932 KB Output is correct
5 Correct 2 ms 3932 KB Output is correct
6 Correct 2 ms 3928 KB Output is correct
7 Correct 2 ms 3932 KB Output is correct
8 Correct 2 ms 3932 KB Output is correct
9 Correct 2 ms 3932 KB Output is correct
10 Correct 2 ms 3928 KB Output is correct
11 Correct 2 ms 4184 KB Output is correct
12 Correct 2 ms 3932 KB Output is correct
13 Correct 1 ms 3932 KB Output is correct
14 Correct 1 ms 3932 KB Output is correct
15 Correct 1 ms 3932 KB Output is correct
16 Correct 13 ms 3928 KB Output is correct
17 Correct 3 ms 3932 KB Output is correct
18 Correct 17 ms 3928 KB Output is correct
19 Correct 1 ms 3928 KB Output is correct
20 Correct 12 ms 3932 KB Output is correct
21 Correct 19 ms 4000 KB Output is correct
22 Correct 11 ms 3932 KB Output is correct
23 Correct 1 ms 3932 KB Output is correct
24 Correct 2 ms 3932 KB Output is correct
25 Correct 51 ms 3984 KB Output is correct
26 Correct 8 ms 3932 KB Output is correct
27 Correct 9 ms 3800 KB Output is correct
28 Correct 6 ms 3932 KB Output is correct
29 Correct 2 ms 4436 KB Output is correct
30 Incorrect 3 ms 4012 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #6
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 3932 KB Output is correct
2 Correct 1 ms 3932 KB Output is correct
3 Correct 2 ms 3932 KB Output is correct
4 Correct 2 ms 3932 KB Output is correct
5 Correct 12 ms 3932 KB Output is correct
6 Correct 2 ms 3928 KB Output is correct
7 Correct 2 ms 3932 KB Output is correct
8 Correct 2 ms 3932 KB Output is correct
9 Correct 2 ms 4084 KB Output is correct
10 Correct 2 ms 3932 KB Output is correct
11 Correct 7 ms 3932 KB Output is correct
12 Incorrect 3 ms 3928 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #7
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4184 KB Output is correct
2 Correct 1 ms 3928 KB Output is correct
3 Correct 1 ms 3932 KB Output is correct
4 Correct 8 ms 3932 KB Output is correct
5 Correct 16 ms 3932 KB Output is correct
6 Correct 2 ms 3932 KB Output is correct
7 Correct 15 ms 3932 KB Output is correct
8 Correct 2 ms 3932 KB Output is correct
9 Correct 15 ms 4188 KB Output is correct
10 Runtime error 4 ms 7516 KB Execution killed with signal 11
11 Halted 0 ms 0 KB -