1)
n=int(input())
for i in range(1,n):
    if i**2 < n:
        print(i**2)
2)
a=input()
sum=0
for i in range(0,len(a)):
    sum=sum+int(a[i])
print(sum)
3)
n=int(input())
kvadrat=1
start=1
for i in range(1,n):
    start=start+2
    kvadrat=kvadrat+start
print(kvadrat)
4)
x=input()
count=0
for i in range(1,10):
 y=input()
 if (y[0] =='-' and x[0] !='-') or (y[0] != '-' and x[0] == '-'):
    count=count+1
 x=y
print(count)
5)
n=1543
start=179
d=2007
itog1543=start+d*1542
print(itog1543)