import time

problemSize=1000000
print('%12s%16s '%('problemSize','Second'))
for count in range(5):
    start=time.time()
    work=1
    for x in range(problemSize):
        work+=1
        work-=1
    elapsed=time.time()-start
    print('%12d%16.3f'%(problemSize,elapsed))
    problemSize*=2