oj.uz

Submission #1106702

# Submission time Handle Problem Language Result Execution time Memory
1106702 2024-10-30T23:13:55 Z inksamurai Passport (JOI23_passport) C++17
48 / 100
 1635 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);
		{
			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 1635 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 504 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 504 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 604 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 Correct 1 ms 336 KB Output is correct
13 Correct 3 ms 592 KB Output is correct
14 Correct 3 ms 760 KB Output is correct
15 Correct 1 ms 336 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 504 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 504 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 604 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 Correct 1 ms 336 KB Output is correct
13 Correct 3 ms 592 KB Output is correct
14 Correct 3 ms 760 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 47 ms 8868 KB Output is correct
17 Correct 12 ms 848 KB Output is correct
18 Correct 103 ms 17744 KB Output is correct
19 Correct 88 ms 16788 KB Output is correct
20 Correct 12 ms 592 KB Output is correct
21 Correct 17 ms 2988 KB Output is correct
22 Correct 77 ms 20812 KB Output is correct
23 Correct 79 ms 14800 KB Output is correct
24 Correct 82 ms 15536 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 504 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 504 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 604 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 Correct 1 ms 336 KB Output is correct
13 Correct 3 ms 592 KB Output is correct
14 Correct 3 ms 760 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 47 ms 8868 KB Output is correct
17 Correct 12 ms 848 KB Output is correct
18 Correct 103 ms 17744 KB Output is correct
19 Correct 88 ms 16788 KB Output is correct
20 Correct 12 ms 592 KB Output is correct
21 Correct 17 ms 2988 KB Output is correct
22 Correct 77 ms 20812 KB Output is correct
23 Correct 79 ms 14800 KB Output is correct
24 Correct 82 ms 15536 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 52 ms 9472 KB Output is correct
28 Correct 12 ms 848 KB Output is correct
29 Correct 17 ms 748 KB Output is correct
30 Correct 19 ms 2808 KB Output is correct
31 Correct 55 ms 10656 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 1635 ms 1048576 KB Execution killed with signal 9
5 Halted 0 ms 0 KB -