Submission #1041560

#	Time	Username	Problem	Language	Result	Execution time	Memory
1041560		irmuun	Railway Trip 2 (JOI22_ho_t4)	C++17	16 / 100	2079 ms	524288 KiB

Main

#include<bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    ll n,k;
    cin>>n>>k;
    ll l[n+5],r[n+5];
    iota(l+1,l+n+1,1);
    iota(r+1,r+n+1,1);
    ll m;
    cin>>m;
    while(m--){
        ll a,b;
        cin>>a>>b;
        if(a<b){
            for(ll i=a;i<=min(a+k-1,b-1);i++){
                r[i]=max(r[i],b);
            }
        }
        else{
            for(ll i=a;i>=max(a-k+1,b+1);i--){
                l[i]=min(l[i],b);
            }
        }
    }
    vector<vector<ll>>ans(n+5,vector<ll>(n+5,-1));
    for(ll i=1;i<=n;i++){
        ll lc=i,rc=i,d=0;
        vector<ll>v;
        v.pb(i);
        while(!v.empty()){
            ll x=lc,y=rc;
            for(ll j:v){
                ans[i][j]=d;
                x=min(x,l[j]);
                y=max(y,r[j]);
            }
            d++;
            v.clear();
            for(ll j=lc-1;j>=x;j--){
                v.pb(j);
            }
            for(ll j=rc+1;j<=y;j++){
                v.pb(j);
            }
            lc=x;
            rc=y;
        }
    }
    ll q;
    cin>>q;
    while(q--){
        ll s,t;
        cin>>s>>t;
        cout<<ans[s][t]<<"\n";
    }
}

• Subtask 1: 8 / 8
• Subtask 2: 8 / 8
• Subtask 3: 0 / 11
• Subtask 4: 0 / 25
• Subtask 5: 0 / 35
• Subtask 6: 0 / 13