Submission #868479

#	Time	Username	Problem	Language	Result	Execution time	Memory
868479		Warinchai	Safety (NOI18_safety)	C++14	100 / 100	40 ms	3840 KiB

safety

#include<bits/stdc++.h>
#pragma GCC optimize("O3","unroll-loops")
#pragma GCC target ("avx2")
using namespace std;
priority_queue<long long>pql;
priority_queue<long long,vector<long long>,greater<long long> >pqr;
long long lzl,lzr;
long long b,c;
int a;
long long ans=0;
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n,h;
    cin>>n>>h;
    for(int i=0;i<n;i++){
        cin>>a;
        b=a-lzl,c=a-lzr;
        if(i>0&&a<pql.top()+lzl){
            //cout<<"left\n";
            pql.push(b);
            pql.push(b);
            ans+=abs(b-pql.top());
            pqr.push(pql.top()+lzl-lzr);
            pql.pop();
        }else if(i>0&&a>pqr.top()+lzr){
            //cout<<"right\n";
            pqr.push(c);
            pqr.push(c);
            ans+=abs(c-pqr.top());
            pql.push(pqr.top()+lzr-lzl);
            pqr.pop();
        }else{
            //cout<<"middle\n";
            pql.push(b);
            pqr.push(c);
        }
        lzl-=h;
        lzr+=h;
        //cout<<ans<<" ";
    }
    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