Submission #1010300

#	Time	Username	Problem	Language	Result	Execution time	Memory
1010300		tvladm2009	Safety (NOI18_safety)	C++17	100 / 100	37 ms	5496 KiB

safety

#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
 
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    ll n, h;
    cin >> n >> h;
    priority_queue<ll> neg;
    ll negd = 0;
    priority_queue<ll, vector<ll>, greater<ll>> pos;
    ll posd = 0;
    ll ans = 0;
    for (int i = 0; i < n; i++) {
        ll a;
        cin >> a;
        if (i == 0) {
            neg.push(a);
            pos.push(a);
        } else {
            negd -= h;
            posd += h;
            ll l = neg.top() + negd;
            ll r = pos.top() + posd;
            if (l <= a && a <= r) {
                neg.push(a - negd);
                pos.push(a - posd);
            } else if (a > r) {
                ans += a - r;
                neg.push(r - negd);
                pos.pop();
                pos.push(a - posd);
                pos.push(a - posd);
            } else {
                ans += l - a;
                pos.push(l - posd);
                neg.pop();
                neg.push(a - negd);
                neg.push(a - negd);
            }
        }
    }
    cout << ans << "\n";
    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