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AtCoder Beginners Selection with Go(途中)

2021/09/21に公開

Golang

AtCoder

tech

前書き

AtCoder Beginners Selection は、AtCoder初心者向け問題集。
Goで競プロやる前に、一度解いてみる。

PracticeA - Welcome to AtCoder

package main

import (
	"fmt"
)

func main() {
	var a, b, c int
	var s string

	fmt.Scanf("%d", &a)
	fmt.Scanf("%d", &b)
	fmt.Scanf("%d", &c)
	fmt.Scanf("%s", &s)

	fmt.Printf("%d %s\n", a+b+c, s)
}

ABC086A-Product

package main

import "fmt"

func main() {
	var a, b int
	fmt.Scanf("%d", &a)
	fmt.Scanf("%d", &b)

	if a*b%2 == 0 {
		fmt.Println("Even")
	} else {
		fmt.Println("Odd")
	}
}

ABC081A - Placing Marbles

package main

import (
	"fmt"
	"strings"
)

func main() {
	var str string
	count := 0
	fmt.Scanf("%s", &str)

	arr := strings.Split(str, "")

	for i := 0; i < 3; i++ {
		if arr[i] == "1" {
			count++
		}
	}

	fmt.Println(count)

}

ABC081B - Shift only

ABC081B - Shift

package main

import (
	"fmt"
)

func main() {
	resurt := 0
	var le, tmp int

	fmt.Scanf("%d", &le)

	for i := 0; i < le; i++ {
		fmt.Scanf("%d", &tmp)

		cnt := 0
		for tmp > 0 && tmp%2 == 0 {
			tmp /= 2
			cnt++
		}

		if i == 0 || cnt < resurt {
			resurt = cnt
		}

	}

	fmt.Println(resurt)

}

ABC087B - Coins

package main

import "fmt"

func main() {
	var a, b, c, x int
	cn := 0
	fmt.Scanf("%d", &a)
	fmt.Scanf("%d", &b)
	fmt.Scanf("%d", &c)
	fmt.Scanf("%d", &x)

	for i := 0; i <= a; i++ {
		for j := 0; j <= b; j++ {
			for k := 0; k <= c; k++ {
				sum := 500*i + 100*j + 50*k
				if x == sum {
					cn++
				}

			}
		}
	}

	fmt.Println(cn)

}

ABC083B - Some Sums

package main

import "fmt"

func main() {
	var n, a, b int
	sum := 0

	fmt.Scanf("%d", &n)
	fmt.Scanf("%d", &a)
	fmt.Scanf("%d", &b)

	for i := 1; i <= n; i++ {
		tmp := 0
		for j := i; j > 0; j /= 10 {
			tmp += j % 10
		}
		if tmp >= a && tmp <= b {
			sum += i
		}
	}

	fmt.Println(sum)

}