Codeforces_158A

#include <iostream>#include <cstring>using namespace std;int p[55];int main(){int n, k, ans;while(cin >> n >> k){memset(p, 0, sizeof(p));ans = 0;for(int i = 0; i < n; i++)cin >> p[i];for(int i = 0; i < k; i++){if(p[i] > 0)ans++;elsebreak;}for(int i = k; i < n; i++){if((p[i] > 0) && (p[i] >= p[k - 1]))ans++;elsebreak;}cout << ans << endl;}return 0;}

K值在数组中没有减一...