1
i = 0
2
sum = 0
3
for i in range(1,101):
4
    sum += i
5
print(sum)

1
i = 0
2
sum = 0
3
while i < 101:
4
    sum += i
5
    i += 1

1
i = 0
2
sum = 0
3
for i in range(1,101):
4
    if i // 10 == 7 or i % 10 == 7:
5
        continue
6
    else:
7
        sum += i
8
print(sum)

1
i = 0
2
sum = 0
3
while i < 101:
4
    if i // 10 == 7 or i % 10 == 7:
5
        i += 1
6
        continue
7
    else:
8
        sum += i
9
        i += 1
10
print(sum)

1
i = 0
2
sum = 0
3
for i in range(1,101):
4
    a = str(i)
5
    if "7" not in a:
6
        sum += i
7
    else:
8
        continue
9
print(sum)