package main

import (
  "bufio"
  "fmt"
  "os"
)

func main() {
  inventories := parse(*bufio.NewScanner(os.Stdin))

  largestInventoryTotal := 0
  for _, inventory := range inventories {
    currentTotal := inventory.getTotal()
    if currentTotal > largestInventoryTotal {
      largestInventoryTotal = currentTotal
    }
  }

  fmt.Println(largestInventoryTotal)
}