package main
import (
    "fmt"
    "bufio"
    "os"
)

func main() {
    var n int
    fmt.Scan(&n)
    
    a := make([]int, 10000000)
    
    scanner := bufio.NewScanner(os.Stdin)
    scanner.Split(bufio.ScanWords)
    
    for i:=0; i<n; i++ {
        var h int
        scanner.Scan()
        fmt.Sscanf(scanner.Text(), "%d", &h)
        
        a[h]++
    }
    
    result := 0
    for j:=0; j<10000000; j++ {
        if a[j]>result {
            result = a[j]
        }
    }
    
    fmt.Println(result)
}