Submission #1270208

#	Time	Username	Problem	Language	Result	Execution time	Memory
1270208		sqwiijqk	Foehn Phenomena (JOI17_foehn_phenomena)	C++20	100 / 100	82 ms	5704 KiB

foehn_phenomena

#include <bits/stdc++.h>
#include <experimental/random>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

void solve1();

using ll = long long;
using ull = unsigned long long;
using ld = double;
#define int long long
const int INF = 1e17;
const int MOD = 998244353;

signed main() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int qwerty = 1;
    // cin >> qwerty;
    while (qwerty--) {
        solve1();
    }
}

void solve1() {
    int n, q, s, t;
    cin >> n >> q >> s >> t;
    vector<int> a(n);
    {
        int x;
        cin >> x;
    }
    int last = 0;
    for (int i = 0; i < n; i++) {
        cin >> a[i];
        a[i] -= last;
        last += a[i];
    }
    int ans = 0;
    for (int i = 0; i < n; i++) {
        if (a[i] < 0) {
            ans -= (a[i]) * t;
        } else {
            ans -= (a[i]) * s;
        }
    }
    while (q--) {
        int l, r, x;
        cin >> l >> r >> x;
        l--;
        r--;
        if (a[l] < 0) {
            ans += a[l] * t;
        } else {
            ans += a[l] * s;
        }
        a[l] += x;
        if (a[l] < 0) {
            ans -= a[l] * t;
        } else {
            ans -= a[l] * s;
        }
        if (r + 1 < n) {
            if (a[r + 1] < 0) {
                ans += (a[r + 1]) * t;
            } else {
                ans += (a[r + 1]) * s;
            }
            a[r + 1] -= x;
            if (a[r + 1] < 0) {
                ans -= (a[r + 1]) * t;
            } else {
                ans -= (a[r + 1]) * s;
            }
        }
        cout << ans << '\n';
    }
}

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