oj.uz

Submission #851545

# Submission time Handle Problem Language Result Execution time Memory
851545 2023-09-20T06:03:07 Z willychan Passport (JOI23_passport) C++14
40 / 100
 2000 ms 969788 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
//#include<bits/extc++.h>
//__gnu_pbds

const int N = 2e5+5;
vector<int> side[N];
vector<int> rside[N];

int main(){
	ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	int n;cin>>n;		
	for(int i=1;i<=n;i++){
		int l,r;cin>>l>>r;	
		for(int j=l;j<=r;j++){
			side[j].push_back(i);
			rside[i].push_back(j);
		}
	}
	int dis1[n+1]={0};
	int disn[n+1]={0};
	dis1[1]=1;
	disn[n]=1;
	queue<int> q;
	q.push(1);
	while(q.size()){
		int a = q.front();
		q.pop();
		for(auto i : side[a]){
			if(dis1[i]) continue;
			dis1[i] = dis1[a]+1;
			q.push(i);
		}
	}
	queue<int> q2;
	q2.push(n);
	while(q2.size()){
		int a = q2.front();
		q2.pop();
		for(auto i : side[a]){
			if(disn[i]) continue;
			disn[i] = disn[a]+1;
			q2.push(i);
		}
	}
	int Q;cin>>Q;
	int rans[n+1] = {0};
	for(int i=1;i<=n;i++) {
		if(!dis1[i]) dis1[i] = 1e8;
		if(!disn[i]) disn[i] = 1e8;
		dis1[i]--;
		disn[i]--;
	}
	while(Q--){
		int x;cin>>x;
		queue<int> qx;
		qx.push(x);
		vector<int> d(n+1,0);
		d[x]=1;
		while(qx.size()){
			int a = qx.front();
			qx.pop();
			for(auto i : rside[a]){
				if(d[i]) continue;
				d[i]= d[a]+1;
				qx.push(i);
			}
		}
		ll ans = 1e9;
		for(int i=1;i<=n;i++){
			if(d[i]==0) continue;
			d[i]--;
			//cout<<rans[i]<<" "<<d[i]<<"\n";
			ans = min(ans,1LL*max(dis1[i]-1,0)+max(disn[i]-1,0)+d[i]+1);
		}
		if(ans<=n) cout<<ans<<"\n";
		else cout<<-1<<"\n";
	}
	return 0;
}

Compilation message

passport.cpp: In function 'int main()':
passport.cpp:48:6: warning: unused variable 'rans' [-Wunused-variable]
   48 |  int rans[n+1] = {0};
      |      ^~~~

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9816 KB Output is correct
2 Correct 2 ms 9816 KB Output is correct
3 Correct 2 ms 9828 KB Output is correct
4 Execution timed out 2089 ms 969788 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9816 KB Output is correct
2 Correct 3 ms 9824 KB Output is correct
3 Correct 2 ms 9820 KB Output is correct
4 Correct 2 ms 9820 KB Output is correct
5 Correct 2 ms 9820 KB Output is correct
6 Correct 2 ms 9816 KB Output is correct
7 Correct 2 ms 9816 KB Output is correct
8 Correct 2 ms 9820 KB Output is correct
9 Correct 2 ms 9816 KB Output is correct
10 Correct 2 ms 9820 KB Output is correct
11 Correct 3 ms 10072 KB Output is correct
12 Correct 3 ms 9820 KB Output is correct
13 Correct 3 ms 10332 KB Output is correct
14 Correct 3 ms 10328 KB Output is correct
15 Correct 3 ms 9816 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9816 KB Output is correct
2 Correct 3 ms 9824 KB Output is correct
3 Correct 2 ms 9820 KB Output is correct
4 Correct 2 ms 9820 KB Output is correct
5 Correct 2 ms 9820 KB Output is correct
6 Correct 2 ms 9816 KB Output is correct
7 Correct 2 ms 9816 KB Output is correct
8 Correct 2 ms 9820 KB Output is correct
9 Correct 2 ms 9816 KB Output is correct
10 Correct 2 ms 9820 KB Output is correct
11 Correct 3 ms 10072 KB Output is correct
12 Correct 3 ms 9820 KB Output is correct
13 Correct 3 ms 10332 KB Output is correct
14 Correct 3 ms 10328 KB Output is correct
15 Correct 3 ms 9816 KB Output is correct
16 Correct 22 ms 25636 KB Output is correct
17 Correct 5 ms 10332 KB Output is correct
18 Correct 43 ms 43644 KB Output is correct
19 Correct 41 ms 41852 KB Output is correct
20 Correct 3 ms 10072 KB Output is correct
21 Correct 8 ms 14428 KB Output is correct
22 Correct 42 ms 50256 KB Output is correct
23 Correct 37 ms 37200 KB Output is correct
24 Correct 35 ms 36700 KB Output is correct

Subtask #4
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9816 KB Output is correct
2 Correct 3 ms 9824 KB Output is correct
3 Correct 2 ms 9820 KB Output is correct
4 Correct 2 ms 9820 KB Output is correct
5 Correct 2 ms 9820 KB Output is correct
6 Correct 2 ms 9816 KB Output is correct
7 Correct 2 ms 9816 KB Output is correct
8 Correct 2 ms 9820 KB Output is correct
9 Correct 2 ms 9816 KB Output is correct
10 Correct 2 ms 9820 KB Output is correct
11 Correct 3 ms 10072 KB Output is correct
12 Correct 3 ms 9820 KB Output is correct
13 Correct 3 ms 10332 KB Output is correct
14 Correct 3 ms 10328 KB Output is correct
15 Correct 3 ms 9816 KB Output is correct
16 Correct 22 ms 25636 KB Output is correct
17 Correct 5 ms 10332 KB Output is correct
18 Correct 43 ms 43644 KB Output is correct
19 Correct 41 ms 41852 KB Output is correct
20 Correct 3 ms 10072 KB Output is correct
21 Correct 8 ms 14428 KB Output is correct
22 Correct 42 ms 50256 KB Output is correct
23 Correct 37 ms 37200 KB Output is correct
24 Correct 35 ms 36700 KB Output is correct
25 Correct 3 ms 9816 KB Output is correct
26 Correct 2 ms 9816 KB Output is correct
27 Execution timed out 2055 ms 26968 KB Time limit exceeded
28 Halted 0 ms 0 KB -

Subtask #5
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9816 KB Output is correct
2 Correct 2 ms 9816 KB Output is correct
3 Correct 2 ms 9828 KB Output is correct
4 Execution timed out 2089 ms 969788 KB Time limit exceeded
5 Halted 0 ms 0 KB -