def main():
    N = int(input())
    Z = []
    for i in range(N):
        a,b = map(int,input().split())
        Z.append((a,b))
    Z.sort(key = lambda x: x[1])
    #print(Z)

    w = 0
    for i in range(N):
        a,b = Z[i]
        if w > b:
            print("No");exit()
        w += a
    print("Yes")

if __name__ == '__main__':
    main()