把一元鈔票換成一分二分五分硬幣每種至少一枚？

先假設已經每種有10枚了,這樣就成了求2毛錢可以換成幾枚的問題了;

程序:

#include<conio.h>

#include<stdio.h>

void main()

{

int one,two,five;

for(one=0;one<=20;one++)

for(two=0;two<=10;two++)

for(five=0;five<=4;five++)

if(one+2*two+5*five==20)

printf("one:%-2d--two:%-2d--five:%-2d\n",one+10,two+10,five+10);

getch();

}