#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n,m,k,a[300][300],i,j,c=0;
	cin>>n>>m>>k;
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			cin>>a[i][j];
		}
	} 
	for(i=0;i<n;i++){
		int s=0;
		for(j=0;j<m;j++){
			s=s+a[i][j];
		}
		if(s>=k) c++;
	} 
		cout<<c;
}
/**************************************************************
	Problem: 2026
	User: yangjunwen
	Language: C++
	Result: Wrong Answer
****************************************************************/