let input = [
    '2 1 3 4 2 3'
];

let print = this.print || console.log;
let gets = this.gets || ((arr, index) => () => arr[index++])(input, 0);


let arr = gets().split(' ').map(Number);

let firstElement = 0;
let secondElement = 0;

if (arr.length % 2 === 0) {
    arr = arr;
} else {
    arr.pop();
}

for (let i = 0; i < arr.length; i += 2) {
    firstElement = arr[i];
    secondElement = arr[i + 1];
}

if (firstElement > secondElement) {
    print('Yes')
} else {
    print('No')
}