import std;

alias P = Tuple!(int, "x", int, "y");

int calc(P[] ps) {
    int ans = 0;
    foreach (i; 0..ps.length) {
        foreach (j; i+1..ps.length) {
            int cnt = 2;
            foreach (k; 0..ps.length) {
                if (k == i || k == j) continue;
                auto x1 = ps[k].x - ps[i].x;
                auto y1 = ps[k].y - ps[i].y;
                auto x2 = ps[j].x - ps[i].x;
                auto y2 = ps[j].y - ps[i].y;
                if (x1 * y2 == x2 * y1) cnt++;
            }
            ans = max(ans, cnt);
        }
    }
    return ans;
}

void main() {
    int n; scan(n);

    P[] ps;
    foreach (_; 0..n) {
        int x, y; scan(x, y);
        ps ~= P(x, y);
    }
    writeln(calc(ps));
}

void scan(T...)(ref T a) {
    string[] ss = readln.split;
    foreach (i, t; T) a[i] = ss[i].to!t;
}
T read(T)() { return readln.chomp.to!T; }
T[] reads(T)() { return readln.split.to!(T[]); }
alias readint = read!int;
alias readints = reads!int;