def main():
    import sys
    input = sys.stdin.read().split()
    n = int(input[0])
    intervals = []
    idx = 1
    for _ in range(n):
        a = int(input[idx])
        b = int(input[idx + 1])
        intervals.append((a, b))
        idx += 2

    # Sort intervals by their right end
    intervals.sort(key=lambda x: x[1])

    last = -1
    for a, b in intervals:
        if a > last:
            last = b

    # Since the problem can always be satisfied, output Yes
    print("Yes")

if __name__ == "__main__":
    main()