oj.uz

Submission #1085893

# Submission time Handle Problem Language Result Execution time Memory
1085893 2024-09-09T02:24:48 Z Bananabread Passport (JOI23_passport) C++17
0 / 100
 83 ms 196304 KB 
#include<bits/stdc++.h>
#define ll long long
#define ntr "\n"
#define mod (ll)(1e9+7)
#define taskname ""
#define frep freopen(taskname".inp","r",stdin); freopen(taskname".out","w",stdout);
using namespace std;
vector<array<int,3>> adj[2501][2501];
ll dist[2501][2501];
ll vis[2501][2501];
ll n,q;
ll l[2501];
ll r[2501];
int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    //frep;
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>l[i]>>r[i];
    }
    for(int i=1;i<=n;i++){
        ll mx=0,mn=1e18;
        for(int j=1;j<=n;j++){
            mx=max(mx,r[i]);
            mn=min(mn,l[i]);
            adj[mn][mx].push_back({i,j,1});
            if(i!=j){
                adj[i+1][j].push_back({i,j,0});
                adj[i][j-1].push_back({i,j,0});
            }
        }
    }
    memset(dist,0x3f,sizeof(dist));
    dist[1][n]=0;
    deque<array<ll,2>> dq;
    dq.push_front({1,n});
    while(!dq.empty()){
        ll u=dq.front()[0],v=dq.front()[1];
        dq.pop_front();
        if(vis[u][v]) continue;
        vis[u][v]=1;
        for(auto i:adj[u][v]){
            ll x=i[0],y=i[1],w=i[2];
            if(dist[x][y]>dist[u][v]+w){
                dist[x][y]=dist[u][v]+w;
                if(w==0){
                    dq.push_front({x,y});
                }
                else{
                    dq.push_back({x,y});
                }
            }
        }
    }
//    for(int i=1;i<=n;i++){
//        for(int j=1;j<=n;j++){
//            cout<<dist[i][j]<<' ';
//        }
//        cout<<ntr;
//    }
    cin>>q;
    for(int i=1;i<=q;i++){
        ll x;
        cin>>x;
        cout<<(dist[x][x] >= 1e18 ? -1 : dist[x][x])<<ntr;
    }
}

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 82 ms 196180 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 83 ms 196304 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Incorrect 83 ms 196304 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 83 ms 196304 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 46.0

# Verdict Execution time Memory Grader output
1 Incorrect 82 ms 196180 KB Output isn't correct
2 Halted 0 ms 0 KB -