oj.uz

Submission #587614

# Submission time Handle Problem Language Result Execution time Memory
587614 2022-07-02T06:49:31 Z cfalas Event Hopping (BOI22_events) C++17
10 / 100
 1500 ms 52480 KB 
#include<bits/stdc++.h>
using namespace std;
#define mp make_pair
#define INF 10000000
#define MOD 1000000007
#define MID ((l+r)/2)
#define HASHMOD 2305843009213693951
#define ll long long
#define ull unsigned long long
#define F first
#define S second
typedef pair<ll, ll> ii;
typedef pair<ii, int> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef map<int, int> mii;

#define EPS 1e-6
#define FOR(i,n) for(int i=0;i<((int)(n));i++)
#define FORi(i,a,b) for(int i=((int)(a));i<((int)(b));i++)
#define FOA(v, a) for(auto v : a)

int t, n;
vi a, b;
vector<vi> adj;
int ans[5500][5500];
int vis[5500][5500];
int main(){
	int q;
	cin>>n>>q;
	adj.assign(n+1, vi());
	vii e(n);
	FOR(i,n){
		cin>>e[i].F>>e[i].S;
	}
	FOR(i,n){
		FOR(j,n){
			if(i==j) continue;
			if(e[j].F<=e[i].S && e[i].S<=e[j].S){
				adj[i+1].push_back(j+1);
			}
		}
		/*
		cout<<i+1<<": ";
		FOA(v, adj[i+1]) cout<<v<<" ";
		cout<<endl;
		*/
	}
	FORi(i,1,n+1){
		queue<ii> q;
		q.push({0, i});
		FOR(j,n+1) ans[i][j] = MOD, vis[i][j] = 0;
		ans[i][i] = 0;
		while(!q.empty()){
			ii t = q.front();
			q.pop();

			if(vis[i][t.S]) continue;

			FOA(v, adj[t.S]){
				if(ans[i][v] > 1 - t.F){
					ans[i][v] = 1 - t.F;
					q.push({-ans[i][v], v});
				}
			}
			vis[i][t.S] = true;

		}
	}
	while(q--){
		int a, b;
		cin>>a>>b;
		if(ans[a][b] < MOD) cout<<ans[a][b]<<endl;
		else cout<<"impossible\n";
	}
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Execution timed out 1543 ms 4416 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 26 ms 16268 KB Output is correct
4 Correct 20 ms 16280 KB Output is correct
5 Correct 26 ms 16196 KB Output is correct
6 Correct 55 ms 17004 KB Output is correct
7 Correct 129 ms 17868 KB Output is correct
8 Correct 159 ms 18908 KB Output is correct
9 Correct 803 ms 20308 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 26 ms 16268 KB Output is correct
4 Correct 20 ms 16280 KB Output is correct
5 Correct 26 ms 16196 KB Output is correct
6 Correct 55 ms 17004 KB Output is correct
7 Correct 129 ms 17868 KB Output is correct
8 Correct 159 ms 18908 KB Output is correct
9 Correct 803 ms 20308 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 28 ms 16188 KB Output is correct
13 Correct 18 ms 16228 KB Output is correct
14 Correct 25 ms 16244 KB Output is correct
15 Correct 50 ms 16972 KB Output is correct
16 Correct 129 ms 17812 KB Output is correct
17 Correct 157 ms 18888 KB Output is correct
18 Correct 777 ms 20224 KB Output is correct
19 Execution timed out 1578 ms 52480 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 296 KB Output is correct
3 Correct 26 ms 16268 KB Output is correct
4 Correct 20 ms 16280 KB Output is correct
5 Correct 26 ms 16196 KB Output is correct
6 Correct 55 ms 17004 KB Output is correct
7 Correct 129 ms 17868 KB Output is correct
8 Correct 159 ms 18908 KB Output is correct
9 Correct 803 ms 20308 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 25 ms 16244 KB Output is correct
13 Correct 17 ms 16168 KB Output is correct
14 Correct 25 ms 16196 KB Output is correct
15 Correct 52 ms 17016 KB Output is correct
16 Correct 134 ms 17776 KB Output is correct
17 Correct 178 ms 18872 KB Output is correct
18 Correct 821 ms 20280 KB Output is correct
19 Execution timed out 1576 ms 4816 KB Time limit exceeded
20 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1550 ms 4664 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Execution timed out 1543 ms 4416 KB Time limit exceeded
3 Halted 0 ms 0 KB -