Submission #1179595

#	Time	Username	Problem	Language	Result	Execution time	Memory
1179595		nekolie	Foehn Phenomena (JOI17_foehn_phenomena)	C++20	100 / 100	195 ms	8792 KiB

foehn_phenomena

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

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n,q,s,t,l,r,x;
    cin >> n >> q >> s >> t;
    long long a[n+1], risa[n+1][2], odp = 0; cin >> a[0];
    for (int i = 1; i <= n; i++)
        cin >> a[i], risa[i][0] = a[i]-a[i-1], risa[i][1] = ((risa[i][0] > 0) ? s : t), odp += risa[i][0]*risa[i][1];
    for (int i = 0; i < q; i++) {
        cin >> l >> r >> x;
        odp -= risa[l][0]*risa[l][1], risa[l][0] += x, risa[l][1] = ((risa[l][0] > 0) ? s : t), odp += risa[l][0]*risa[l][1];
        if (r < n)
            odp -= risa[r+1][0]*risa[r+1][1], risa[r+1][0] -= x, risa[r+1][1] = ((risa[r+1][0] > 0) ? s : t), odp += risa[r+1][0]*risa[r+1][1];
        cout << -odp << endl;
    }
    return 0;
}

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