oj.uz

Submission #1106703

# Submission time Handle Problem Language Result Execution time Memory
1106703 2024-10-30T23:20:58 Z inksamurai Passport (JOI23_passport) C++17
0 / 100
 1629 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){
					que.push(v);
					d1[v]=1;
				}
			}
			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,a[i].fi,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]=d1[v];
					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});
					}
				}
			}
			// rep(s,n){
			// 	auto [l,r]=a[s];
			// 	d12[s]=d1[s];
			// 	int i=0,nr=r;
			// 	int cnt=0;
			// 	while(i<=n-1){
			// 		nr=max(nr,a[i].se);
			// 		if(i<n-1 and r==i){
			// 			if(nr==r){
			// 				cnt=inf;
			// 				break;
			// 			}
			// 			r=nr;
			// 			cnt+=1;
			// 		}
			// 		i+=1;
			// 	}
			// 	// if(t==1 and s==n-1-7) print("wtf",r,cnt,nr);
			// 	d12[s]+=cnt;
			// 	d12[s]=min(d12[s],inf);
			// }
		}
		// 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 1629 ms 1048576 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -

Subtask #2
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 504 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 592 KB Output is correct
12 Incorrect 1 ms 336 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #3
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 504 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 592 KB Output is correct
12 Incorrect 1 ms 336 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #4
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 504 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 592 KB Output is correct
12 Incorrect 1 ms 336 KB Output isn't correct
13 Halted 0 ms 0 KB -

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 1629 ms 1048576 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -