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: Accepted)

#include <stdlib.h>
#include <stdio.h>

int main(){
    int a, b, c;
    scanf("%d %d %d", &a, &b, &c);

    if( (a+b>c && b+c>a && c+a>b) && (a==b && b==c) ){
        printf("Yes\n");
    }
    else{
        printf("No\n");
    }
    return 0;
}