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

class Grades{
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;
        
        setSum(score1,score2, score3, score4,score5);
    }

    void setSum(int score1, int score2, int score3, int score4, int score5){
        
        this->sum = this->score1 + this->score2 + this->score3 + this->score4 + this->score5;
    }
    int get_calculateSum(){
        return this->sum;
    }

    private:
    int score1, score2,score3,score4, score5, sum;

};
int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    int s1,s2,s3,s4,s5, n;
    int count = 0;
    cin >> n;
    cin >> s1 >> s2 >> s3 >> s4 >> s5;

    Grades Kristen;

    Kristen.input(s1,s2,s3,s4,s5);
    int Ksum = Kristen.get_calculateSum();
    //cout << Ksum << endl;
    //should be 135

    for(int i = 0; i< n-1; i++){
        Grades others;
        cin >> s1 >> s2 >> s3 >> s4 >> s5;
        others.input(s1,s2,s3,s4,s5);
        int Osum = others.get_calculateSum();
        //first one should be 140
        //second should be 120
        //cout << Osum << endl;
        if( Osum> Ksum){
            count ++;
        }
    }
    cout << count << endl;

    return 0;
}

/*
inputs: 
3
30 40 45 10 10
40 40 40 10 10
50 20 30 10 10
*/