def zadanie(s,x):
s=100*s+x
n=1
while s<2021:
s=s+5*n
n=n+1
return n
for i in range(300):
for j in range(1000):
if zadanie(i,j)==15:
print(j)
break
def zadanie(s,x):
s=100*s+x
n=1
while s<2021:
s=s+5*n
n=n+1
return n
for i in range(300):
for j in range(1000):
if zadanie(i,j)==15:
print(j)
break