hdoj--5562--Clarke and food（模拟）

Clarke and food

Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)
Total Submission(s): 620    Accepted Submission(s): 361

Problem Description

Clarke is a patient with multiple personality disorder. One day, Clarke turned into a cook, was shopping for food.
Clarke has bought n food. The volume of the ith food is vi. Now Clarke has a pack with volume V. He wants to carry food as much as possible. Tell him the maxmium number he can brought with this pack.

 

Input

The first line contains an integer T(1≤T≤10), the number of the test cases.
For each test case:
The first line contains two integers n,V(1≤n≤105,1≤V≤109).
The second line contains n integers, the ith integer denotes vi(1≤vi≤109).

 

Output

For each test case, print a line with an integer which denotes the answer.

 

Sample Input

1
3 5
1 3 4

 

Sample Output

2

Hint:  
We can carry 1 and 3, the total volume of them is 5.  

#include<stdio.h>
#include<string.h>
#include<algorithm>
using namespace std;
int num[100100];
int main()
{
	int t;
	scanf("%d",&t);
	while(t--)
	{
		int n,v;
		memset(num,0,sizeof(num)); 
		scanf("%d%d",&n,&v);
		for(int i=0;i<n;i++)
		scanf("%d",&num[i]);
		sort(num,num+n);
		int i;
		for(i=0;i<n;i++)
		{
			if(v-num[i]<0)
			break;
			else
			v-=num[i];
		}
		printf("%d\n",i);
	}
	return 0;
}