01背包问题-一维数组-golang

package main

import "fmt"

var n, v int
var vi, wi int
var value []int

func main(){
    fmt.Scanf("%d%d", &n, &v)

    value = make([]int, v+1)


    for i := 1; i <=n; i++{
        fmt.Scanf("%d%d", &vi, &wi)
        for j := v; j >= vi; j--{
            value[j] = max(value[j], value[j-vi]+wi)
        }
    }



    fmt.Println(value[v])
}

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