Submission #1258687

#	Time	Username	Problem	Language	Result	Execution time	Memory
1258687		quanaskinger	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	291 ms	8512 KiB

foehn_phenomena

#include <bits/stdc++.h>
using namespace std;
long long m, n, q, l, r, x, y, s, t;
long long change(long long x)
{
    long long hs = (x < 0 ? t : -s);
    return hs * abs(x - y);
}
int main()
{
    cin >> n >> q >> s >> t;
    long long diff[n + 5], arr[n + 5], res = 0;
    for (long long i = 0; i <= n; i++)
    {
        cin >> arr[i];
        if (i > 0)
        {
            diff[i] = arr[i] - arr[i - 1];
            res += change(diff[i]);
        }
    }
    while (q--)
    {
        cin >> l >> r >> x;
        if (l >= 1)
        {
            res -= change(diff[l]);
            res += change(diff[l] + x);
        }
        if (r < n)
        {
            res -= change(diff[r + 1]);
            res += change(diff[r + 1] - x);
        }
        diff[l] += x;
        diff[r + 1] -= x;
        cout << res << "\n";
    }
}

• Subtask 1: 30 / 30
• Subtask 2: 10 / 10
• Subtask 3: 60 / 60