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ABBalance.cpp
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#include <bits/stdc++.h>
using namespace std;
int main()
{
int t;
cin >> t;
while (t--)
{
string s;
cin>>s;
int n = s.length();
if(n==1){
cout<<s<<endl;
}
else{
int ab=0,ba=0;
for (int i = 1; i < n; i++)
{
if(s[i-1]=='a' && s[i]=='b'){
ab++;
}
if(s[i-1]=='b' && s[i]=='a'){
ba++;
}
}
if(ab==ba){
cout<<s<<endl;
}
else{
if(ab>ba){
for (int i = 1; i < n && ab!=ba; i++)
{
if(s[i-1]=='a' && s[i]=='b'){
s[i-1]='b';
ab--;
}
}
}
else{
for (int i = 1; i < n && ab!=ba; i++)
{
if(s[i-1]=='b' && s[i]=='a'){
s[i-1]='a';
ba--;
}
}
}
cout<<s<<endl;
}
}
}
}