import java.util.*;
public class Practicer {
//private int score = 0; ?? why can't?
public static void main(String[] args) {
int score = 0;
int[] sides = new int[3];
Scanner cin = new Scanner(System.in);
while(cin.hasNext()){
for(int i=0;i<3;i++){
sides[i] = cin.nextInt();
}
Arrays.sort(sides);
if((sides[0]+sides[1]) > sides[2]){
score++;
}
}
System.out.println(score);
}
}