P4552 [Poetize6] IncDec Sequence

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#include<bits/stdc++.h>
using namespace std;typedef long long LL;
const int N=1e5+10;
LL a[N],b[N];
int n;int main()
{ios::sync_with_stdio(0),cin.tie(0);cin>>n;for(int i=1;i<=n;i++){cin>>a[i];if(i>1) b[i]=a[i]-a[i-1];}LL p=0,q=0;for(int i=2;i<=n;i++){if(b[i]>0) p+=b[i];else q-=b[i];}cout<<max(p,q)<<endl<<abs(p-q)+1<<endl;return 0;}