#include <stddef.h> /*
""" */
double entry(double *a, double *b, size_t l) {
 double s;
 for(int i=0;i<l;i++) s+=a[i]*b[i];
 return s;
}
int main(){return 0;}

/* """

"\""
entry=lambda a,b:sum(a*b for a,b in a.zip(b))
#"
""""
Entry ← {+´𝕨×𝕩}
"""
#"# */