sort and print 02

#include<bits/stdc++.h>
using namespace std;
typedef struct
{
    int roll;
    string name;
    int marks;
} students;
bool comparator(students a, students b)
{
    if(a.marks != b.marks)
        return a.marks > b.marks;
    else if(a.marks == b.marks)
        return a.roll < b.roll;
    return false;
}
int main()
{
    int n;
    cin >> n;
    students s[n];
    for(int i = 0; i < n; i++)
    {
        cin >> s[i].roll;
        cin.ignore();
        getline(cin, s[i].name);
        cin >> s[i].marks;
    }
    sort(s, s+n, comparator);
    printf("Roll | Name\t  | Marks\n");
    printf("-------------------------\n");
    for(int i = 0; i < n; i++)
    {
        //cout << s[i].marks << " " << s[i].roll << " " << s[i].name << endl;
        printf("%4d", s[i].roll);
        cout << " | " << s[i].name << "\t  | " << s[i].marks << endl;
    }
    return 0;
}