46. 携带研究材料，go语言代码超时，但我找不到优化的点了

[yihao-bit]

`package main

import "fmt"

func main() {
var m, n int
fmt.Scan(&m, &n)
materialSpaces := make([]int, m)
for i := range materialSpaces {
fmt.Scan(&materialSpaces[i])
}
materialValues := make([]int, m)
for i := range materialValues {
fmt.Scan(&materialValues[i])
}
dp := make([]int, n+1)
for i := 0; i < m; i++ {
for j := n; j >= materialSpaces[i]; j-- {
dp[j] = max(dp[j], dp[j-materialSpaces[i]]+materialValues[i])
}
}
fmt.Println(dp[n])
}

func max(a, b int) int {
if a > b {
return a
}
return b
}
`花了1.7s

[yihao-bit]

把fmt.Scan替换成bufio.NewScanner就行