codejam.go

a.go

package main

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

func check(err error) {
	if err != nil {
		panic(err)
	}
}

func main() {
	file, _ := os.Open("./A-small-practice.in")
	fscanner := bufio.NewScanner(file)
	_ = fscanner.Scan()
	i := 0
	for fscanner.Scan() {
		i++
		n, err := strconv.Atoi(fscanner.Text())
		check(err)
		if n == 0 {
			fmt.Printf("Case #%d: INSOMNIA \n", i)
			continue
		}

		res := make(map[string]bool)
		for k := 1; ; k++ {
			for _, s := range strconv.Itoa(k * n) {
				res[string(s)] = true
			}
			if len(res) >= 10 {
				fmt.Printf("Case #%d: %d\n", i, k*n)
				break
			}
		}
	}
}

b.go

package main

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

func main() {
	file, _ := os.Open("./B-large-practice.in")
	fscanner := bufio.NewScanner(file)
	_ = fscanner.Scan()
	i := 0
	for fscanner.Scan() {
		i++
		str := []rune(fscanner.Text())

		n := 0
		last := '+'
		for k := len(str) - 1; k >= 0; k-- {
			if str[k] == last {
				continue
			}
			last = str[k]
			n++
		}

		fmt.Printf("Case #%d: %d\n", i, n)
	}
}

c.go

package main

import (
	"bufio"
	"fmt"
	"math/big"
	"os"
	"strconv"
	"strings"
)

func main() {
	file, _ := os.Open("./C-small-practice.in")
	fscanner := bufio.NewScanner(file)
	_ = fscanner.Scan()
	i := 1
	for fscanner.Scan() {
		in := strings.Split(fscanner.Text(), " ")
		n, err := strconv.Atoi(in[0])
		if err != nil {
			panic(err)
		}
		//j, err := strconv.Atoi(in[1])
		//if err != nil {
		//	panic(err)
		//}

		min, ok := big.NewInt(0).SetString("1"+strings.Repeat("0", n-2)+"1", 2)
		if !ok {
			panic("min panic")
		}
		max, ok := big.NewInt(0).SetString("1"+strings.Repeat("1", n-2)+"1", 2)
		if !ok {
			panic("max panic")
		}

		fmt.Printf("Case #%d:\n", i)

		for m := min; m.Cmp(max) <= 0; m.Add(m, big.NewInt(1)) {
			str := m.Text(2)
			if strings.HasSuffix(str, "0") {
				continue
			}
			for base := 10; base >= 2; base-- {

			}
		}
	}
}