Submission #1284004

#	Time	Username	Problem	Language	Result	Execution time	Memory
1284004		imarn	Safety (NOI18_safety)	C++20	100 / 100	36 ms	3704 KiB

safety

//#include "festival.h"
#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#define ll long long
#define ld long double
#define pii pair<int,int>
#define pll pair<ll,ll>
#define plx pair<ll,int>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vvi vector<vi>
#define ub(x,i) upper_bound(all(x),i)-x.begin()
#define lb(x,i) lower_bound(all(x),i)-x.begin()
#define sz(x) (ll)x.size()
#define cd complex<double>
#define t3 tuple<ll,ll,ll>
using namespace std;
const int mxn=2e5+5;
priority_queue<ll,vector<ll>,greater<ll>>rq;
priority_queue<ll>lq;
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n;ll h;cin>>n>>h;
    int x;cin>>x;
    ll rs=0;lq.push(x),rq.push(x);
    ll up=0,lo=0;
    for(int i=1;i<n;i++){
        up+=h,lo+=h;
        cin>>x;
        if(lq.top()>x+lo){
            rs+=lq.top()-(x+lo);
            lq.push(x+lo);
            rq.push(lq.top()-lo-up);
            lq.push(x+lo);
            lq.pop();
        }
        else if(rq.top()<x-up){
            rs+=x-up-(rq.top());
            rq.push(x-up);
            lq.push(rq.top()+lo+up);
            rq.push(x-up);
            rq.pop();
        }
        else {
            lq.push(x+lo);
            rq.push(x-up);
        }
    }cout<<rs;
}

• 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