Problem:
Score : 100 points

Problem Statement

You are given three integers A, B and C.

Determine if there exists an equilateral triangle whose sides have lengths A, B and C.

Constraints

All values in input are integers.

1 \leq A,B,C \leq 100

Input

Input is given from Standard Input in the following format:

A B C

Output

If there exists an equilateral triangle whose sides have lengths A, B and C, print Yes; otherwise, print No.

Sample Input 1

2 2 2

Sample Output 1

Yes

There exists an equilateral triangle whose sides have lengths 2, 2 and 2.

Sample Input 2

3 4 5

Sample Output 2

No

There is no equilateral triangle whose sides have lengths 3, 4 and 5.

Solution in C (Clang 3.8.0) (judge verdict: Wrong Answer)

#include <stdio.h>
int main() {
  float a, b, c;
  scanf("%f%f%f", &a, &b, &c);
  if ((a + b > c && a + c > b && b + c > a)
      && (a > 0 && b > 0 && c > 0)) {
    if (a == b && b == c) {
      printf("YES");
    }
	else {
      printf("NO");
    }
  } else {
    printf("NO");
  }
   return 0;
}