# include<iostream> # include<cstdio> # include<iomanip> using namespace std; int main(){ int n,b,f=0; cin>>n; for(int i=1;i<=n;i++){ cin>>b; b=b%10-b/1000-b/100%10-b%100/10; if(b>0){ f=f+1; } } cout<<f; return 0; }