銆怭AT鐢茬骇銆?008 Elevator (20 鍒?

Posted 2022-04-28

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#include<bits/stdc++.h>

using namespace std;

int a[100007];

int main()

int n;

cin>>n;

int ans=0;

for(int i=1;i<=n;++i)

cin>>a[i];

if(a[i]>a[i-1])

ans+=(a[i]-a[i-1])*6+5;

else

ans+=(a[i-1]-a[i])*4+5;

cout<<ans;

return 0;