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 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<stdio.h>

int absn(int n);
int main() {
	int N,T,A,H[1002],dif[1002];

	scanf("%d %d %d", &N,&T,&A);

	int i;
	for (i = 0; i < N; i++) {
		scanf("%d", &H[i]);
		dif[i] = absn(A - (T - H[i] * 0.006));
	}

	int ans = 1,mindif = dif[0];
	for (i = 0; i < N; i++) {
		if (dif[i] <= mindif) {
			mindif = dif[i];
			ans = i + 1;
		}
	}
	
	printf("%d",ans);
}

int absn(int n) {

	int answer;
	if (n < 0) {
		answer = -n;
	}
	else {
		answer = n;
	}

	return answer;
}