#include<bits/stdc++.h>
using namespace std;
int main() {
	int a[1000][7]={0},i,j,n,m,k,h=0,x=0;
	cin>>n>>m>>k;
	for(i=0;i<n;i++){
		for(j=0;j<m;j++){
			cin>>a[i][j];
		}
	} 
	for(i=0;i<n;i++){
		x=0;
		for(j=0;j<m;j++){
			x=x+a[i][j];
			if(x>=k) h++;
		}
	} 
	cout<<h;
}
/**************************************************************
	Problem: 2026
	User: linzihang
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/