B. The Number of Products

Posted 2021-05-07 shallow-dream

#include<bits/stdc++.h>
using namespace std;
#define ll long long 
const int maxn=1e6+5;
long long n,s1=0,s2=0,a1=0,a2=0,c;
int main()
{
    scanf("%lld",&n);
    for(int i=1;i<=n;i++)
    {
        int x;
        scanf("%d",&x);
        if(x>0)
        {
            a1++;
        }
        else
        {
            c=a2;
            a2=a1;
            a1=c;
            a2++;
        }
        s1+=a1;
        s2+=a2;
    }
    printf("%lld %lld",s2,s1);

}