oj.uz

Submission #1106706

# Submission time Handle Problem Language Result Execution time Memory
1106706 2024-10-30T23:30:26 Z inksamurai Passport (JOI23_passport) C++17
48 / 100
 1630 ms 1048576 KB 
#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define per(i,n) for(int i=n-1;i>=0;i--)
#define rng(i,c,n) for(int i=c;i<n;i++)
#define fi first
#define se second
#define pb push_back
#define sz(a) (int) a.size()
#define all(a) a.begin(),a.end()
#define vec(...) vector<__VA_ARGS__>
#define _3M8yqhy ios::sync_with_stdio(0),cin.tie(0)
typedef long long ll;
typedef vector<int> vi;
typedef pair<int,int> pii;
void print(){cout<<'\n';}
template<class h,class...t>
void print(const h&v,const t&...u){cout<<v<<' ',print(u...);}

const int inf=1e9;

void slv(){
	int n;
	cin>>n;

	vec(pii) a;
	rep(i,n){
		int l,r;
		cin>>l>>r;
		l-=1,r-=1;
		a.pb({l,r});
	}	

	vi pns(n,inf);
	// 12 way
	rep(t,2){
		vi d1(n,inf);
		{
			vec(vi) adj(n);
			rep(i,n){
				rng(j,a[i].fi,a[i].se+1){
					adj[j].pb(i);
				}
			}
			queue<int> que;
			rep(v,n){
				if(a[v].fi==0){
					d1[v]=1;
					que.push(v);
				}
			}
			while(sz(que)){
				int v=que.front();
				que.pop();
				for(auto u:adj[v]){
					if(d1[u]==inf){
						d1[u]=d1[v]+1;
						que.push(u);
					}
				}
			}
		}

		vi d12(n,inf);
		{
			vec(vi) adj(n);
			rep(i,n){
				rng(j,0,a[i].se+1){
					adj[j].pb(i);
				}
			}
			priority_queue<pii,vec(pii),greater<pii>> pq;
			rep(v,n){
				if(a[v].se==n-1){
					d12[v]=1;
					pq.push({d12[v],v});
				}
			}
			while(sz(pq)){
				auto [cosu,v]=pq.top();
				pq.pop();
				for(auto u:adj[v]){
					if(d12[u]>d12[v]+1){
						// if(u==n-1-3 and t==1) print(v,dp[v]);
						d12[u]=d12[v]+1;
						pq.push({d12[u],u});
					}
				}
			}
			rng(v,1,n-1){
				d12[v]+=d1[v]-1;
			}
			d12[n-1]=d1[n-1];
		}
		// if(t==1 and s==n-1-3) print("wtf",i,r,cnt);

		vi dp(n,inf);
		dp=d12;
		{
			vec(vi) adj(n);
			rep(i,n){
				rng(j,a[i].fi,a[i].se+1){
					adj[j].pb(i);
				}
			}
			priority_queue<pii,vec(pii),greater<pii>> pq;
			rep(v,n){
				pq.push({dp[v],v});
			}
			while(sz(pq)){
				auto [cosu,v]=pq.top();
				pq.pop();
				for(auto u:adj[v]){
					if(dp[u]>dp[v]+1){
						// if(u==n-1-3 and t==1) print(v,dp[v]);
						dp[u]=dp[v]+1;
						pq.push({dp[u],u});
					}
				}
			}
		}

		// if(t==1){
		// 	print(dp[n-1-3],d1[n-1-3]);
		// }

		rep(v,n){
			dp[v]=min(dp[v],d12[v]);
			if(!t){
				pns[v]=min(pns[v],dp[v]);
			}else{
				pns[n-1-v]=min(pns[n-1-v],dp[v]);
			}
		}

		rep(i,n){
			a[i].fi=n-1-a[i].fi;
			a[i].se=n-1-a[i].se;
			swap(a[i].fi,a[i].se);
		}
		reverse(all(a));
	}

	int q;
	cin>>q;
	rep(i,q){
		int x;
		cin>>x;
		x-=1;
		print(pns[x]==inf?-1:pns[x]);
	}
}

signed main(){
_3M8yqhy;
	slv();
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Runtime error 1630 ms 1048576 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 2 ms 760 KB Output is correct
12 Correct 2 ms 592 KB Output is correct
13 Correct 3 ms 924 KB Output is correct
14 Correct 3 ms 848 KB Output is correct
15 Correct 2 ms 1036 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 2 ms 760 KB Output is correct
12 Correct 2 ms 592 KB Output is correct
13 Correct 3 ms 924 KB Output is correct
14 Correct 3 ms 848 KB Output is correct
15 Correct 2 ms 1036 KB Output is correct
16 Correct 90 ms 19812 KB Output is correct
17 Correct 44 ms 17588 KB Output is correct
18 Correct 153 ms 27892 KB Output is correct
19 Correct 150 ms 26884 KB Output is correct
20 Correct 48 ms 17488 KB Output is correct
21 Correct 52 ms 18216 KB Output is correct
22 Correct 140 ms 29500 KB Output is correct
23 Correct 140 ms 25216 KB Output is correct
24 Correct 125 ms 21936 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 2 ms 760 KB Output is correct
12 Correct 2 ms 592 KB Output is correct
13 Correct 3 ms 924 KB Output is correct
14 Correct 3 ms 848 KB Output is correct
15 Correct 2 ms 1036 KB Output is correct
16 Correct 90 ms 19812 KB Output is correct
17 Correct 44 ms 17588 KB Output is correct
18 Correct 153 ms 27892 KB Output is correct
19 Correct 150 ms 26884 KB Output is correct
20 Correct 48 ms 17488 KB Output is correct
21 Correct 52 ms 18216 KB Output is correct
22 Correct 140 ms 29500 KB Output is correct
23 Correct 140 ms 25216 KB Output is correct
24 Correct 125 ms 21936 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 105 ms 21364 KB Output is correct
28 Correct 51 ms 17752 KB Output is correct
29 Correct 51 ms 17364 KB Output is correct
30 Correct 55 ms 18144 KB Output is correct
31 Correct 109 ms 21128 KB Output is correct

Subtask #5
0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Runtime error 1630 ms 1048576 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -