Problem:
﻿Score: 100 points

Problem Statement

In AtCoder city, there are five antennas standing in a straight line. They are called Antenna A, B, C, D and E from west to east, and their coordinates are a, b, c, d and e, respectively.

Two antennas can communicate directly if the distance between them is k or less, and they cannot if the distance is greater than k.

Determine if there exists a pair of antennas that cannot communicate directly.

Here, assume that the distance between two antennas at coordinates p and q (p < q) is q - p.

Constraints

a, b, c, d, e and k are integers between 0 and 123 (inclusive).

a < b < c < d < e

Input

Input is given from Standard Input in the following format:

a
b
c
d
e
k

Output

Print :( if there exists a pair of antennas that cannot communicate directly, and print Yay! if there is no such pair.

Sample Input 1

1
2
4
8
9
15

Sample Output 1

Yay!

In this case, there is no pair of antennas that cannot communicate directly, because:

the distance between A and B is 2 - 1 = 1

the distance between A and C is 4 - 1 = 3

the distance between A and D is 8 - 1 = 7

the distance between A and E is 9 - 1 = 8

the distance between B and C is 4 - 2 = 2

the distance between B and D is 8 - 2 = 6

the distance between B and E is 9 - 2 = 7

the distance between C and D is 8 - 4 = 4

the distance between C and E is 9 - 4 = 5

the distance between D and E is 9 - 8 = 1

and none of them is greater than 15. Thus, the correct output is Yay!.

Sample Input 2

15
18
26
35
36
18

Sample Output 2

:(

In this case, the distance between antennas A and D is 35 - 15 = 20 and exceeds 18, so they cannot communicate directly.
Thus, the correct output is :(.

Solution in C (GCC 5.4.1) (judge verdict: Wrong Answer)

#include <stdio.h>

int main(int argc, char **argv) {
	int a, b, c, d, e;
	int tmp;
	int recipes[5];

	tmp = scanf("%d", &a);
	tmp = scanf("%d", &b);
	tmp = scanf("%d", &c);
	tmp = scanf("%d", &d);
	tmp = scanf("%d", &e);

	recipes[0] = a;
	recipes[1] = b;
	recipes[2] = c;
	recipes[3] = d;
	recipes[4] = e;

	int min = 10;
	int mindex = 0;
	for (int i = 0; i < 5; i++) {
		if ((recipes[i] % 10) == 0) continue;
		if ((recipes[i] % 10) < min) {
			mindex = i;
			min = recipes[i] % 10;
		}
	}

	if (!(min == 10)) {
		recipes[mindex] -= min;
	}

	int time = 0;
	for (int i = 0; i < 5; i++) {
		time += (recipes[i] / 10) * 10;
		if ((recipes[i] % 10) == 0) continue;
		time += 10;
	}

	time += min;
	printf("%d", time);

	return 0;
}