解题思路:
注意事项:
参考代码:
import java.util.*;
public class A1004 {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
do {
int n = sc.nextInt();
if (n == 0) {
break;
}
int a[] = new int[55];
for (int i = 0; i < a.length; i++) {
if (i < 4) {
a[i] = i;
} else {
a[i] = a[i - 1] + a[i - 3];
}
}
System.out.println(a[n]);
} while (sc.hasNextLine());
}
}
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