Submission #685546

#	Time	Username	Problem	Language	Result	Execution time	Memory
685546		zeroesandones	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	30 / 100	1072 ms	3516 KiB

foehn_phenomena

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

typedef long long ll;
typedef long double ld;
typedef vector<ll> vi;
typedef pair<ll, ll> pi;

#define FOR(i, j, k) for (ll i = j; i < (ll) k; ++i)
#define FORD(i, j, k) for (ll i = j; i >= (ll) k; --i)
#define nl "\n"
#define sp " "

#define all(x) (x).begin(), (x).end()
#define sc second
#define fr first
#define pb emplace_back

void solve()
{
    ll n, q, s, t;
    cin >> n >> q >> s >> t;

    ll a[n + 1];
    FOR(i, 0, n + 1)
        cin >> a[i];

    auto calc = [&]() {
        ll res = 0;
        FOR(i, 1, n + 1) {
            if(a[i - 1] < a[i])
                res -= s * (a[i] - a[i - 1]);
            else
                res += t * (a[i - 1] - a[i]);
        }
        return res;
    };

    while(q--) {
        int l, r, v;
        cin >> l >> r >> v;
        FOR(i, l, r + 1)
            a[i] += v;
        cout << calc() << nl;
    }
}

signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    ll t = 1;
    // cin >> t;
    while (t--)
    {
        solve();
    }
}

• Subtask 1: 30 / 30
• Subtask 2: 0 / 10
• Subtask 3: 0 / 60