//https://www.nowcoder.com/practice/98dc82c094e043ccb7e0570e5342dd1b?tpId=37&&tqId=21298&sourceUrl=https%3A%2F%2Fwww.nowcoder.com%2Fexam%2Foj #include <iostream> #include <string> using namespace std; int main() { string str1, str2; cin >> str1 >> str2; // while...