Submission #1677708

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Source Code Expand

package main

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

func main() {
	sc.Split(bufio.ScanWords)
	k := nextInt()
	t := nextInt()
	cake := make([]int, t)
	maxCake := 0
	for i := 0; i < t; i++ {
		cake[i] = nextInt()
		maxCake = max(maxCake, cake[i])
	}

	fmt.Println(max(maxCake-1-(k-maxCake), 0))
}

var sc = bufio.NewScanner(os.Stdin)

func nextLine() string {
	sc.Scan()
	return sc.Text()
}

func nextInt() int {
	i, _ := strconv.Atoi(nextLine())
	return i
}

func max(a, b int) int {
	if a > b {
		return a
	}
	return b
}

Submission Info

Judge Result