Submission #141529

#	Time	Username	Problem	Language	Result	Execution time	Memory
141529		meatrow	Safety (NOI18_safety)	C++17	18 / 100	68 ms	3676 KiB

safety

//#pragma GCC optimize("O3")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,tune=native")
//#pragma GCC optimize ("unroll-loops")
#include <bits/stdc++.h>

using namespace std;

using ll = long long;


int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n, h;
    cin >> n >> h;
    priority_queue<ll> left;
    priority_queue<ll, vector<ll>, greater<ll>> right;
    ll ans = 0;
    int s;
    cin >> s;
    left.push(s);
    right.push(s);
    for (int i = 1; i < n; i++) {
        cin >> s;
        ll shift = i * h;
        int left_border = left.top() - shift;
        int right_border = right.top() +  shift;
        if (s < left_border) {
            left.push(s + shift);
            left.push(s + shift);
            right.push(left.top() - 2 * shift);
            left.pop();
            ans += abs(s - right.top() - shift);
        } else if (s > right_border) {
            right.push(s - shift);
            right.push(s - shift);
            left.push(right.top() + 2 * shift);
            right.pop();
            ans += abs(s - left.top() + shift);
        } else {
            left.push(s + shift);
            right.push(s - shift);
        }
    }
    cout << ans;
    return 0; 
}

• Subtask 1: 0 / 3
• Subtask 2: 4 / 4
• Subtask 3: 9 / 9
• Subtask 4: 5 / 5
• Subtask 5: 0 / 6
• Subtask 6: 0 / 11
• Subtask 7: 0 / 11
• Subtask 8: 0 / 22
• Subtask 9: 0 / 29