NextRound.cpp

/*
Contest 158: Probelm A
"Contestant who earns a score equal to or greater than the k-th place finisher's score will advance to the next round, as long as the contestant earns a positive score..." — an excerpt from contest rules.

A total of n participants took part in the contest (n ≥ k), and you already know their scores. Calculate how many participants will advance to the next round.

Input
The first line of the input contains two integers n and k (1 ≤ k ≤ n ≤ 50) separated by a single space.

The second line contains n space-separated integers a1, a2, ..., an (0 ≤ ai ≤ 100), where ai is the score earned by the participant who got the i-th place. The given sequence is non-increasing (that is, for all i from 1 to n - 1 the following condition is fulfilled: ai ≥ ai + 1).

Output
Output the number of participants who advance to the next round.

*/




#include <iostream>
#include <cstring>
using namespace std;

int main ()
{
  int n,k,count=0;
  cin>>n>>k;
  int a[n];
  for(int i=0;i<n;i++)
  {
      cin>>a[i];
  }
  k--;
  for(int i=0;i<n;i++)
  {
      if(a[i]>0)
      {
          if(i<=k)
            count++;
          else if(a[i]==a[k])
            count++;
      }

  }
  cout<<count;
}