#include<iostream>
#include<cstdio>
#include<cmath>
using namespace std;
int main()
{
int n;
ios::sync_with_stdio(false);
while((cin>>n)&&n)
{
long long next=0,ans=0,x;
for(int i=0;i<n;i++)
{
cin>>x;
ans+=abs(next);
next+=x;
}
cout<<ans<<endl;
}
return 0;
}
UVA 11054(p237)----Wine trading in Gergovia
最新推荐文章于 2021-08-15 10:52:00 发布