제출 #667242

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
667242		Ahmed57	Foehn Phenomena (JOI17_foehn_phenomena)	C++14	30 / 100	125 ms	9804 KiB

foehn_phenomena

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

int main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    long long n,q,s,t;
    cin>>n>>q>>s>>t;
    int diff[n];
    int x;cin>>x;long long ans = 0;
    for(int i = 0;i<n;i++){
        int y ;cin>>y;
        diff[i] = y-x;
        if(diff[i]>=0){
            ans-=s*diff[i];
        }else ans+=t*(abs(diff[i]));
        x = y;
    }
    while(q--){
        int l, r , x;
        cin>>l>>r>>x;
        if(l-1>=0){
        if(diff[l-1]>=0){
            ans+=s*diff[l-1];
        }else ans-=t*(abs(diff[l-1]));
        diff[l-1]+=x;
        if(diff[l-1]>=0){
            ans-=s*diff[l-1];
        }else ans+=t*(abs(diff[l-1]));
        }if(r<n){
        if(diff[r]>=0){
            ans+=s*diff[r];
        }else ans-=t*(abs(diff[r]));
        diff[r]-=x;
        if(diff[r]>=0){
            ans-=s*diff[r];
        }else ans+=t*(abs(diff[r]));
        }
        cout<<ans<<"\n";
    }
}

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