Submission #1212484

#	Time	Username	Problem	Language	Result	Execution time	Memory
1212484		VMaksimoski008	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	296 ms	7312 KiB

foehn_phenomena

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

signed main() {
    ll n, q, s, t, ans = 0;
    cin >> n >> q >> s >> t;

    vector<ll> a(n+1), d(n+1);
    for(int i=0; i<=n; i++) {
        cin >> a[i];

        if(i > 0) {
            d[i] = a[i] - a[i-1];
            if(d[i] > 0) ans -= d[i] * s;
            else ans += abs(d[i]) * t;
        }
    }

    while(q--) {
        int l, r, x; cin >> l >> r >> x;

        if(d[l] > 0) ans += d[l] * s;
        else ans += d[l] * t;
        d[l] += x;
        if(d[l] > 0) ans -= d[l] * s;
        else ans -= d[l] * t;

        if(r != n) {
            if(d[r+1] > 0) ans += d[r+1] * s;
            else ans += d[r+1] * t;
            d[r+1] -= x;
            if(d[r+1] > 0) ans -= d[r+1] * s;
            else ans -= d[r+1] * t;
        }

        cout << ans << '\n';
    }
}

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