Problem:
Score: 200 points

Problem Statement

A country decides to build a palace.

In this country, the average temperature of a point at an elevation of x meters is T-x \times 0.006 degrees Celsius.

There are N places proposed for the place. The elevation of Place i is H_i meters.

Among them, Princess Joisino orders you to select the place whose average temperature is the closest to A degrees Celsius, and build the palace there.

Print the index of the place where the palace should be built.

It is guaranteed that the solution is unique.

Constraints

1 \leq N \leq 1000

0 \leq T \leq 50

-60 \leq A \leq T

0 \leq H_i \leq 10^5

All values in input are integers.

The solution is unique.

Input

Input is given from Standard Input in the following format:

N
T A
H_1 H_2 ... H_N

Output

Print the index of the place where the palace should be built.

Sample Input 1

2
12 5
1000 2000

Sample Output 1

1

The average temperature of Place 1 is 12-1000 \times 0.006=6 degrees Celsius.

The average temperature of Place 2 is 12-2000 \times 0.006=0 degrees Celsius.

Thus, the palace should be built at Place 1.

Sample Input 2

3
21 -11
81234 94124 52141

Sample Output 2

3

Solution in C++14 (GCC 5.4.1) (judge verdict: Accepted)

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int maxn = 1005;
int main()
{
	int h[maxn];
	int n,t,a;
	double b[maxn];
	cin>>n;
	cin>>t>>a;
	for(int i=1;i<=n;i++)
	{
		cin>>h[i];
		b[i]=t*1.0-h[i]*0.006;
	}
	int ans=1;
	double minv;
	minv=abs(b[1]-a*1.0);
	for(int i=2;i<=n;i++)
	{
		if(minv>abs(b[i]-a*1.0)){
			ans=i;
			minv=abs(b[i]-a*1.0);
		}
	}	
	cout<<ans<<endl;
	return 0;
}