Submission #1017935

#	Time	Username	Problem	Language	Result	Execution time	Memory
1017935		vjudge1	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	272 ms	12656 KiB

foehn_phenomena

#include "bits/stdc++.h"
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ordered_set tree <int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
#define nemeshay ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define allr(pon) pon.rbegin(), pon.rend()
#define all(pon) pon.begin(), pon.end()
#define nosolve cout << "-1\n"
#define YES cout << "YES\n"
#define Yes cout << "Yes\n"
#define pii pair <int, int>
#define OK cout << "OK\n"
#define Ok cout << "Ok\n"
#define NO cout << "NO\n"
#define No cout << "No\n"
#define pf push_front
#define int long long
#define pb push_back
#define sigma signed
#define sc second
#define fr first
using namespace __gnu_pbds;
using namespace std;
const int N = 1e6 + 20, INF = 1e10 + 7;
int a[N], d[N], pon[N];
sigma main(){
    nemeshay
    int n, q, s, t, ans = 0;
    cin >> n >> q >> s >> t;
    for (int i = 0; i <= n; i++) cin >> a[i];
    for (int i = 1; i <= n; i++) {
        d[i] = a[i] - a[i - 1];
        if (d[i] > 0) ans -= d[i] * s;
        else ans -= 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;
        if (r + 1 <= n) {
            if (d[r + 1] > 0) ans += d[r + 1] * s;
            else ans += d[r + 1] * t;
        }
        d[l] = d[l] + x;
        if(r + 1 <= n) d[r + 1] = d[r + 1] - x;
        if (d[l] > 0) ans -= d[l] * s;
        else ans -= d[l] * t;

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

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