2565.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:2565  User Id:fzk 
Memory:36K  Time:0MS
Language:C++  Result:Accepted

Source 

#include"stdio.h"
#include"stdlib.h"

int main()
{
	int s,i,name,total,a;
	char w1[10],w2[10],w3[10];
	bool key;
	double l,v;

	scanf( "%d %lf", &s, &l );

	while( scanf( "%d", &name ) == 1 )
	{
		key = false;
		total = 0;

		for( i=0; i<s; i++ )
		{
			scanf( " %[^:]:%[^:]:%s", w1, w2, w3 );
			if( w1[0] == '-' ) key = true;
			else total += atoi( w1 ) * 3600 + atoi( w2 ) * 60 + atoi( w3 );
		}
		printf( "%3d: ", name );
		if( key ) printf( "-\n" );
		else
		{
			v = total / l;
			a = (int)(v+0.50001);
			printf( "%d:%02d min/km\n", a/60, a%60 );
		}
	}
	return 0;
}