题解 | #进制转换#

package main

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

func main() {
	in := bufio.NewReader(os.Stdin)
	data, _, _ := in.ReadLine()
	ret, _ := strconv.ParseUint(string(data)[2:], 16, 64)
	fmt.Println(ret)
}