题解 | 格式化输出（二）
格式化输出（二）
https://www.nowcoder.com/practice/3bd78a6de34a447fa49571a03f164fd3
import sys
name = input()
print(name.lower())
print(name.upper())
print(name.title())
for line in sys.stdin:
a = line.split()
print(int(a[0]) + int(a[1]))