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 (GCC 5.4.1) (judge verdict: Accepted)

/*
 * main.c
 *
 *  Created on: 2019/03/30
 *      Author: family
 */


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

int dt[3] = {0};

int main()
{
    scanf("%d %d %d", &dt[0], &dt[1], &dt[2]);
    if( (dt[0]==dt[1]) && (dt[0]==dt[2])) {
        printf("Yes\n");
    } else {
        printf("No\n");
    }
    return 0;
}