Submission #860006

#	Time	Username	Problem	Language	Result	Execution time	Memory
860006		yusufhocaoglu	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	483 ms	13140 KiB

foehn_phenomena

#include <iostream>
#include <bits/stdc++.h>
using namespace std;
#define MOD 1000000007
#define MOD2 998244353
#define ll long long
#define pri pair<int,int>
#define prl pair<ll,ll>
#define vi vector<int>
#define vl vector<ll>
#define vp vector<pair<int,int>>
#define vpl vector<pair<ll,ll>>
#define re return 0
#define sqrt sqrtl
#define int ll

int32_t main() {
    int n,q,s,t;cin>>n>>q>>s>>t;n++;
    vi spot(n);for (int i = 0;i<n;i++) cin>>spot[i];
    vi diff(n-1);for (int i = 0;i<n-1;i++) diff[i] = spot[i+1]-spot[i];
    int windtemp = 0;
    for (int i = 0;i<n-1;i++) {
        if (diff[i]>0) windtemp-=diff[i]*s;
        else windtemp-=diff[i]*t;
    }
    for (int i = 0;i<q;i++) {
        int l,r,x;cin>>l>>r>>x;
        if (l!=0) {
            if (diff[l-1]>0) windtemp+=diff[l-1]*s;
            else windtemp+=diff[l-1]*t;
            diff[l-1]+=x;
            if (diff[l-1]>0) windtemp-=diff[l-1]*s;
            else windtemp-=diff[l-1]*t;
        }
        if (r!=n-1) {
            if (diff[r]>0) windtemp+=diff[r]*s;
            else windtemp+=diff[r]*t;
            diff[r]-=x;
            if (diff[r]>0) windtemp-=diff[r]*s;
            else windtemp-=diff[r]*t;
        }
        cout<<windtemp<<endl;
    }
    return 0;
}

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