NextRound.cpp

/* "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>
 
using namespace std;
 
int main()
{
    int n, k, h;
    int b = 0;
    int a[50];
    cin >> n >> k;
    k = k - 1;
    for(int i = 0; i < n; i++){
        cin >> a[i];
    }
 
    if(a[0] == 0){
        cout << 0;
        return 0;
    }
 
    for(int j = 0; j < n; j++){
 
        if(a[k] <= a[j] && a[j] > 0){
            b++;
        }
    }
    cout << b;
    return 0;
}