钱币兑换

看有多少个2和3，其余的都是1

#include <stdio.h>

int main() {
    int count = 0;
    int N;
    while(scanf("%d",&N)!=EOF){
        int count = 0;
        {
            for (int j = 0; j <= N/2 ; j++)
            {
                for (int k = 0; k <= (N-2*j)/3; k++)
                {
                    if(2*j+3*k<=N){
                        count++;
                    }
                }
            }
        }
        printf("%d
",count);
    }
}