C++ provides a nice alternative data type to manipulate strings, and the data type is conveniently called string. Some of its widely used features are the following:
Declaration:
string a = "abc";Size:
int len = a.size();Concatenate two strings:
string a = "abc"; string b = "def"; string c = a + b; // c = "abcdef".Accessing element:
string s = "abc"; char c0 = s[0]; // c0 = 'a' char c1 = s[1]; // c1 = 'b' char c2 = s[2]; // c2 = 'c' s[0] = 'z'; // s = "zbc"
P.S.: We will use cin/cout to read/write a string.
Input Format
You are given two strings, and , separated by a new line. Each string will consist of lower case Latin characters ('a'-'z').
Output Format
In the first line print two space-separated integers, representing the length of and respectively.
In the second line print the string produced by concatenating and ().
In the third line print two strings separated by a space, and . and are the same as and , respectively, except that their first characters are swapped.
Sample Input
abcd
ef
Sample Output
4 2
abcdef
ebcd af
Explanation
- "abcd"
- "ef"
- "abcdef"
- "ebcd"
- "af"