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