Submission #824047

#	Time	Username	Problem	Language	Result	Execution time	Memory
824047		12345678	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	99 ms	13200 KiB

foehn_phenomena

#include <bits/stdc++.h>

using namespace std;

#define ll long long

const int nx=2e5+5;
ll v[nx], d[nx], n, q, s, t, l, r, k, ans, tmp;

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

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