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    if name == 'main':

    N , X = map(int , input().split())
    
    subjects = []
    
    
    for i in range(X):
    
        subjects.append(list(map(float , input().split())))
    
    
    
    result = list(zip(*subjects))
    
    
    for j in result:
    
        final_result = sum(j)/len(j)
        print("{:.1f}".format(final_result))