Submission #882208

#	Time	Username	Problem	Language	Result	Execution time	Memory
882208		imarn	Safety (NOI18_safety)	C++14	100 / 100	40 ms	5496 KiB

safety

#include<bits/stdc++.h>
#define f first
#define s second
#define ll long long
#define pb push_back
#define pii pair<int,int>
#define pll pair<ll,ll>
#define sz(x) (int)x.size()
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vvi vector<vi>
using namespace std;
priority_queue<ll,vector<ll>,greater<ll>>lq;
priority_queue<ll>rq;
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    ll ans=0;
    int n,h;cin>>n>>h;
    ll x,r=0;cin>>x;
    lq.push(x),rq.push(x);
    for(int i=1;i<n;i++){
        cin>>x;r+=h;
        if(x-r>lq.top()){
            ans+=x-r-lq.top();
            lq.push(x-r);
            rq.push(lq.top()+r+r);
            lq.push(x-r);
            lq.pop();
        }
        else if(x+r<rq.top()){
            ans+=rq.top()-x-r;
            rq.push(x+r);
            lq.push(rq.top()-r-r);
            rq.push(x+r);
            rq.pop();
        }
        else {
            lq.push(x-r);
            rq.push(x+r);
        }
    }cout<<ans;
}

• Subtask 1: 3 / 3
• Subtask 2: 4 / 4
• Subtask 3: 9 / 9
• Subtask 4: 5 / 5
• Subtask 5: 6 / 6
• Subtask 6: 11 / 11
• Subtask 7: 11 / 11
• Subtask 8: 22 / 22
• Subtask 9: 29 / 29