function main(input) {
    const args = input.split(' ');

    var A = parseInt(args[0], 10);
    var B = parseInt(args[1], 10);
    var C = parseInt(args[2], 10);

    if( A === B && A === C && B === C) {
        console.log('Yes')
    } else {
        console.log('No')
    }
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'));
