Created
June 5, 2014 09:21
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// お題:n個の任意の自然数の和がxのとき、n個の自然数の積の最大値を求める。 | |
// 例 | |
// x=10 -> 36 | |
// x=64 -> 13947137604 | |
// x=100 -> 7412080755407364 | |
package main | |
import ("fmt") | |
func calc(N int) uint64 { | |
var max uint64 | |
var dp []uint64 | |
dp = make([]uint64, N + 1) | |
dp[1] = 1 | |
for i := 2; i <= N; i++ { | |
max = 1 | |
for j := 1; j < i; j++ { | |
if (max < dp[i - j] * dp[j]) { | |
max = dp[i - j] * dp[j] | |
} | |
} | |
if max > uint64(i) {dp[i] = max} else {dp[i] = uint64(i)} | |
} | |
return dp[N] | |
} | |
func main() { | |
fmt.Println(calc(1)) // -> 36 | |
fmt.Println(calc(64)) // -> 13947137604 | |
fmt.Println(calc(100)) // -> 7412080755407364 | |
} | |
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