Submission #51503

#	Time	Username	Problem	Language	Result	Execution time	Memory
51503		vovinam	Foehn Phenomena (JOI17_foehn_phenomena)	C++14	0 / 100	711 ms	4140 KiB

foehn_phenomena

#include<bits/stdc++.h>
using namespace std;
int res,a[200005],b[200005],s,t;
int trans(int a){
	if(a<0){
		return a*s;
	}
	return a*t;
}
signed main(){
	int n,q;
	cin>>n>>q>>s>>t;
	for(int i=0;i<=n;i++){
		cin>>a[i];
	}
	for(int i=1;i<=n;i++){
		b[i]=(a[i-1]-a[i]);
		res+=trans(b[i]);
	}
	for(int i=1;i<=q;i++){
		int l,r,x;
		cin>>l>>r>>x;
		if(l>0){
			res-=trans(b[l]);
			b[l]-=x;
			res+=trans(b[l]);
		}
		if(r<n){
			res-=trans(b[r+1]);
			b[r+1]+=x;
			res+=trans(b[r+1]);
		}
		cout<<res<<"\n";
	}
}

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