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北京大学《ACM/ICPC大学生程序设计竞赛训练》暑期课面向全球招生!

像这样贪心过不了的,我试过了

Posted by tmpbt at 2004-09-09 10:19:28 on Problem 1787
In Reply To:Why i was always wrong ?I've checked quite a lot of test cases, but I still haven't found a wrong answer. Posted by:anonym11 at 2004-09-06 02:19:32
> My code is as follow:
> #include <iostream>
> using namespace std;
> int c1,c2,c3,c4;
> void print()
> {
> 	printf("Throw in %d cents, %d nickels, %d dimes, and %d quarters.\n",c1,c2,c3,c4);
> }
> int main()
> {
> 	long int price,sum,del;
> 	cin >> price >> c1 >> c2 >> c3 >> c4;
> 	while(price || c1 || c2 || c3 || c4)
> 	{
> 		sum = c1 + 5*c2 + 10*c3 + 25*c4;
> 		price = sum - price;
> 		if(price<0)
> 			cout << "Charlie cannot buy coffee.\n";
> 		else      //subtract the least coins.
> 		{
> 			if(!price)
> 			{
> 				print();
> 				goto in;
> 			}
> 			else
> 			{
> 				del = (price/25)>c4?c4:(price/25);
> 				c4 -= del;
> 				price -= 25*del;
> 			}
> 			if(!price)
> 			{
> 				print();
> 				goto in;
> 			}
> 			else
> 			{
> 				del = (price/10)>c3?c3:(price/10);
> 				c3 -= del;
> 				price -= 10*del;
> 			}
> 			if(!price)
> 			{
> 				print();
> 				goto in ;
> 			}
> 			else
> 			{
> 				del = (price/5)>c2?c2:(price/5);
> 				c2 -= del;
> 				price -= 5*del;
> 			}
> 			if(!price)
> 			{
> 				print();
> 				goto in;
> 			}
> 			else
> 			{
> 				del = price>c1?c1:price;
> 				c1 -= del;
> 				price -= del;
> 			}
> 			if(!price)
> 				print();
> 			else
> 				cout << "Charlie cannot buy coffee.\n";
> 		}
> in:
> 		cin >> price >> c1 >> c2 >> c3 >> c4;
> 	}
> 	return 0;
> }

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