#include <iostream>
#include <math.h>
//#include <string.h>
using namespace std;
string f2(double a)
{
return to_string(a);
}
int main() {
// your code goes here
cout<<sqrt(25);
cout<<f2(2);
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8bWF0aC5oPgovLyNpbmNsdWRlIDxzdHJpbmcuaD4KdXNpbmcgbmFtZXNwYWNlIHN0ZDsKCnN0cmluZyBmMihkb3VibGUgYSkKewoJcmV0dXJuIHRvX3N0cmluZyhhKTsKfQoKaW50IG1haW4oKSB7CgkvLyB5b3VyIGNvZGUgZ29lcyBoZXJlCgljb3V0PDxzcXJ0KDI1KTsKCWNvdXQ8PGYyKDIpOwoJcmV0dXJuIDA7Cn0=