#include<iostream> #include<cstdio> #include<cstring> #include<cmath> using namespace std; int main(){ int g,s,b,q,sum=0,n,i,t; cin>>n; for(i=1;i<=n;i++){ cin>>t; g=t%10; s=(t/10)%10; b=(t/100)%10; q=(t/1000)%10; if(g>s+b+q){ sum++; } } cout<<sum<<endl; return 0; }