#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

class Student {
    private:
    int score1, score2, score3, score4, score5;
    
    public:
    void input(int score1, int score2, int score3, int score4, int score5) {
        this->score1 = score1;
        this->score2 = score2;
        this->score3 = score3;
        this->score4 = score4;
        this->score5 = score5;
    }
    
    int calculateTotalScore() {
        return this->score1+this->score2+this->score3+this->score4+this->score5;
    }
};

int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */ 
    int n;
    cin >> n;
    int s1, s2, s3, s4, s5;
    cin >> s1 >> s2 >> s3 >> s4 >> s5;
    Student Kristen;
    Kristen.input(s1, s2, s3, s4, s5);
    int KristenScore = Kristen.calculateTotalScore();
    int cnt = 0;
    n--;
    while (n-- > 0) {
        Student others;
        cin >> s1 >> s2 >> s3 >> s4 >> s5;
        others.input(s1, s2, s3, s4, s5);
        if(others.calculateTotalScore() > KristenScore) cnt++;
    }  
    cout << cnt;
    return 0;
}