for x in range(30):
for y in range(25):
if x+y ==30 and 2*x +4*y ==90:
print(x,y)
for x in range(30):
for y in range(25):
if x+y ==30 and 2*x +4*y ==90:
print(x,y)
for x in range(30):
for y in range(25):
if x+y ==30 and 2*x +4*y ==90:
print(x,y)
770

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