HDOJ 1028 Ignatius and the Princess III
2017-10-17 16:59
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HDACM1028
母函数
母函数原理
母函数
母函数原理
import java.util.Scanner; public class Main{ public static void main(String[] args) { int[] f = new int [121]; int[] temp = new int[121]; for (int i = 0; i < f.length; i++) { f[i]=1; // 1~120 全部由1相加 } for (int i = 2; i <= 120; i++) { for (int j = 0; j <= 120; j++) { for (int k = 0; i*k+j<=120;k++) {//1~120由1~i组成的所有可能 temp[i*k+j] += f[j]; } } for (int j = 0; j <= 120; j++) { f[j] = temp[j]; temp[j] = 0; } } Scanner sc = new Scanner(System.in); while (sc.hasNext()) { int n = sc.nextInt(); System.out.println(f ); } } }
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