Submission #1166118

#	Time	Username	Problem	Language	Result	Execution time	Memory
1166118		spycoderyt	Safety (NOI18_safety)	C++20	100 / 100	66 ms	3684 KiB

safety

#include <bits/stdc++.h>
#define int long long 
using namespace std;

int32_t main() {
    int n,h,x,ans=0;
    cin >> n >> h;
    priority_queue<int> lq;
    priority_queue<int,vector<int>,greater<int> > rq;
    for(int i = 0;i<n;i++) {
        cin >> x;
        if(i==0){
            lq.push(x);
            rq.push(x);
            continue;
        }
        int range = i * h;
        if(x + range < lq.top()) {
            lq.push(x+range);
            ans += abs(lq.top() - (x+range));
            lq.push(x+range);
            rq.push(lq.top() - 2 * range);
            lq.pop();
        } else if (x - range > rq.top()) {
            rq.push(x-range);
            ans += abs(rq.top() - (x - range));
            rq.push(x-range);
            lq.push(rq.top() + 2 * range);
            rq.pop();
        } else {
            lq.push(x+range);
            rq.push(x-range);
        }
    }
    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