#include <iostream> #include <cstring> using namespace std; int main() { string s1, s2, s3; cin >> s1; s2 = s3 = s1; int len = s1.length(); for (int i = 0; i < len; i++){ if (s2[i] >= 'A' && s2[i] <= 'Z') s2[i] = 32; if (s3[i] >= 'a' && s3[i] <= 'z') s3[i] = 32; } cout << s1 << endl << s2 << endl << s3 << endl; return 0; }