for i in range(1, 100):
    for j in range(1, 50):
        if 10 * i + 20 * j == 100:
            print(i, end=' ')
            print(j)
print()

/**************************************************************
	Problem: 1792
	User: admin
	Language: Python
	Result: Accepted
	Time:52 ms
	Memory:34244 kb
****************************************************************/