题解 | #放苹果#

#include <stdio.h>
int F(int m, int n) {
    if (n < 0 || m < 0)
        return 0;
    else if (m == 1 || n == 1)
        return 1;
    else
        return F(m, n - 1) + F(m - n, n);
}
int main() {
    int m = 0;
    int n = 0;
    while (scanf("%d %d", &m, &n) != EOF)
        printf("%d", F(m, n));
    return 0;
}