import random

if __name__ == '__main__':
    trials = 2000
    trial_array = range(trials)
    # update_process = [30,40,50,60,70,75,80,85,90,95]
    # update_process = [30,50,70,80,90]
    # update_process = [50,70,90]
    # update_process = [50]
    # update_process = [300,600]
    update_process = [100,400,600,800,1000,1200,1400,1500,1600,1800]
    method_array = []
    for item in trial_array:
        if item in update_process:
            method_array.append("u")
        else:
            method_array.append("f")
    # map_array = list(map(str, method_array))
    print("\""+'" "'.join(method_array)+"\"")
    # print(method_array)
