#include<bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin>>n;
map<string, int> m;
for(int i=1; i<=n*2-1; i++)
{
string a;
cin>>a;
m[a]++;
}
for(auto x : m)
{
if(x.second%2!=0)
{
cout<<x.first <<"\n";
return 0;
}
}
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
340 KB |
Output is correct |
4 |
Correct |
2 ms |
340 KB |
Output is correct |
5 |
Correct |
1 ms |
340 KB |
Output is correct |
6 |
Correct |
87 ms |
5348 KB |
Output is correct |
7 |
Correct |
147 ms |
7772 KB |
Output is correct |
8 |
Correct |
172 ms |
9476 KB |
Output is correct |
9 |
Correct |
206 ms |
10252 KB |
Output is correct |
10 |
Correct |
187 ms |
10372 KB |
Output is correct |