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1251A.cpp
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40 lines (39 loc) · 688 Bytes
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#include <bits/stdc++.h>
using namespace std;
#define ll long long int
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
ll t;
cin >> t;
while(t--)
{
string s;
cin >> s;
ll a[26]={0};
for (ll i = 0; i < s.length()-1; i++) {
if(s[i]==s[i+1] && s[i]!='0')
{
s[i]='0';
s[i+1]='0';
}
}
for (ll i = 1; i < s.length(); i++) {
if(s[i]==s[i-1] && s[i]!='0')
{
s[i]='0';
s[i+1]='0';
}
}
set<char> st;
for (ll i = 0; i < s.length(); i++) {
if(s[i]!='0')
st.insert(s[i]);
}
for(auto it:st)
cout << it;
cout << endl;
}
}