#include <iostream>
using namespace std;
int main() {
char str[] = "A C Q U A";
cout<<str<<endl;
for(char *ptr = str+1; *ptr != '\0'; ptr++){
cout<<*ptr;
cout<<string(uintptr_t(ptr - 1 - str), ' ');
cout<<*ptr<<endl;
}
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwppbnQgbWFpbigpIHsKICBjaGFyIHN0cltdID0gIkEgQyBRIFUgQSI7CiAgY291dDw8c3RyPDxlbmRsOwogIGZvcihjaGFyICpwdHIgPSBzdHIrMTsgKnB0ciAhPSAnXDAnOyBwdHIrKyl7CiAgICBjb3V0PDwqcHRyOwogICAgY291dDw8c3RyaW5nKHVpbnRwdHJfdChwdHIgLSAxIC0gc3RyKSwgJyAnKTsKICAgIGNvdXQ8PCpwdHI8PGVuZGw7CiAgfQoKICByZXR1cm4gMDsKfQ==