#include<bits/stdc++.h>
using namespace std;
int n,m;
const int N=1e5+10;
int cha[N],a[N],ans;
int main(){
	cin>>n>>m;
	for(int i=1;i<=m;i++){
		cin>>a[i];
	}
	for(int i=1;i<=m-1;i++){
		int l=min(a[i],a[i+1]),r=max(a[i],a[i+1])-1;
		cha[l]+=1;
		cha[r+1]-=1;
	}
	for(int i=1;i<=m;i++) a[i]=a[i-1]+cha[i],cout<<a[i]<<endl;
	for(int i=1;i<n;i++){
		int x,y,z;
		cin>>x>>y>>z;
		ans+=max(x*a[i],z+y*a[i]);
	}
	cout<<ans;
	return 0;
}