Submission #1357454

#	Time	Username	Problem	Language	Result	Execution time	Memory
1357454		Aviansh	Safety (NOI18_safety)	C++20	100 / 100	30 ms	3684 KiB

safety

#include <bits/stdc++.h>

using namespace std;

signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n;
    long long h;
    cin >> n >> h;
    long long ans = 0;
    priority_queue<long long>pql;
    priority_queue<long long, vector<long long>, greater<long long>>pqr;
    long long c;
    cin >> c;
    pql.push(c);
    pqr.push(c);
    long long lazl=-h;
    long long lazr=h;
    for(int i = 1;i<n;i++){
        cin >> c;
        if(pql.top()+lazl>=c){
            ///put in left
            ans+=pql.top()+lazl-c;
            pql.push(c-lazl);
            pql.push(c-lazl);
            long long curr = pql.top()+lazl;
            pql.pop();
            pqr.push(curr-lazr);
        }
        else if(pqr.top()+lazr<=c){
            ///put in right
            ans+=c-pqr.top()-lazr;
            pqr.push(c-lazr);
            pqr.push(c-lazr);
            long long curr = pqr.top()+lazr;
            pqr.pop();
            pql.push(curr-lazl);
        }
        else{
            pql.push(c-lazl);
            pqr.push(c-lazr);
        }
        lazl-=h;
        lazr+=h;
    }
    cout << ans;
    return 0;
}

• 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