#include<bits/stdc++.h>
using namespace std;
string s,a,b,ans;
int x=1,ss;
int main()
{
ios::sync_with_stdio(false);
//freopen("pass.in","r",stdin);
//freopen("pass.out","w",stdout);
cin>>s;
ss=s.size();
s=" "+s;
a=s[1];
b=s[ss];
s.erase(ss,1);
s.erase(1,1);
ss-=2;
for(int c=1;c<=ss;c++)
{
a+=s[c];
b=s[ss]+b;
if(a==b&&s.find(a)!=-1)
{
ans=a;
}
ss-=2;
if(ss<3) break;
}
if(ans=="") cout<<"qwerty";
else cout<<ans;
return 0;
}
Compilation message
password.cpp: In function 'int main()':
password.cpp:22:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
22 | if(a==b&&s.find(a)!=-1)
| ~~~~~~~~~^~~~
/usr/bin/ld: /tmp/ccqiCJMI.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccI01zEF.o:password.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccqiCJMI.o: in function `main':
grader.cpp:(.text.startup+0x66): undefined reference to `guess[abi:cxx11](int, int)'
collect2: error: ld returned 1 exit status
