Submission #1273131

#	Time	Username	Problem	Language	Result	Execution time	Memory
1273131		kaiboy	Foehn Phenomena (JOI17_foehn_phenomena)	C++20	100 / 100	69 ms	5756 KiB

foehn_phenomena

#include <algorithm>
#include <iostream>

using namespace std;

const int N = 200000;

long long aa[N];

int main() {
	ios_base::sync_with_stdio(false), cin.tie(NULL);
	int n, q, s, t; cin >> n >> q >> s >> t >> aa[0];
	for (int i = 0; i < n; i++)
		cin >> aa[i];
	for (int i = n - 1; i; i--)
		aa[i] -= aa[i - 1];
	long long ans = 0;
	for (int i = 0; i < n; i++)
		ans -= aa[i] * (aa[i] > 0 ? s : t);
	while (q--) {
		int l, r, a; cin >> l >> r >> a, l--;
		ans += aa[l] * (aa[l] > 0 ? s : t);
		aa[l] += a;
		ans -= aa[l] * (aa[l] > 0 ? s : t);
		if (r < n) {
			ans += aa[r] * (aa[r] > 0 ? s : t);
			aa[r] -= a;
			ans -= aa[r] * (aa[r] > 0 ? s : t);
		}
		cout << ans << '\n';
	}
	return 0;
}

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