将一笔零钱换成5分、2分和1分的硬币，要求每种硬币至少有一枚，有几种不同的换法？

输入样例:
13
输出样例:
fen5:2, fen2:1, fen1:1, total:4
fen5:1, fen2:3, fen1:2, total:6
fen5:1, fen2:2, fen1:4, total:7
fen5:1, fen2:1, fen1:6, total:8
count = 4

#include 
int main(){
	int x;
	scanf("%d",&x);
	int total;
	int count=0;
	for(int fen5=x/5;fen5>=1;fen5--){
		for(int fen2=(x-fen5*5)/2;fen2>=1;fen2--){
			for(int fen1=(x-fen5*5-fen2*2);fen1>=1;fen1--){
				if(fen5*5+fen2*2+fen1==x){
				total=fen5+fen2+fen1;
				printf("fen5:%d, fen2:%d, fen1:%d, total:%d\n",fen5,fen2,fen1,total); 
				count++;
				}
			}
		}
	}
	printf("count = %d",count); 
}