2586.txt

北大ACM题目例程 详细的解答过程 程序实现 算法分析

Problem Id:2586  User Id:fzk 
Memory:24K  Time:0MS
Language:C++  Result:Accepted

Source 

#include"stdio.h"

int main()
{
	int s,d,i,ans,t;
	while( scanf( "%d %d", &s, &d ) == 2 )
	{
		ans = 0;
		for( i=4; i && ( t=s*(5-i)-d*i ) < 0 ; i-- )
		{
			t *= 2;
			if( (5-i)==1 ) t += s-d;
			else t += s*2; 

			if( t > ans ) ans = t;
		}

		if( ans > 0 )printf( "%d\n", ans );
		else printf( "Deficit\n" );
	}

	return 1;
}