package main

import (
  "bufio"
  "fmt"
  "os"
  "aoc2022/day04/common"
)

func main() {
  assignmentPairs := common.Parse(*bufio.NewScanner(os.Stdin))
  sum := 0

  for _, assignmentPair := range assignmentPairs {
    if assignmentPair.OverlapsFully() {
      sum++
    }
  }

  fmt.Println(sum)
}