#include<bits/stdc++.h>
using namespace std;
#define Study ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define ll long long
#define pb push_back
#define ff first
#define ss second
#define fori for(ll i=0;i<n;i++)
#define ins insert
void work(){
ll n;
cin>>n;
map<string,ll>m;
for(ll i=1;i<2*n;i++){
string k;
cin>>k;
m[k]++;
}
for(auto x: m){
if(x.second%2==1){
cout<<x.first;
return;
}
}
}
int main(){
Study;
ll t=1;
//cin>>t;
while(t--){
work();
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
336 KB |
Output is correct |
2 |
Correct |
1 ms |
336 KB |
Output is correct |
3 |
Correct |
1 ms |
336 KB |
Output is correct |
4 |
Correct |
1 ms |
336 KB |
Output is correct |
5 |
Correct |
1 ms |
336 KB |
Output is correct |
6 |
Correct |
39 ms |
5372 KB |
Output is correct |
7 |
Correct |
76 ms |
7752 KB |
Output is correct |
8 |
Correct |
77 ms |
9456 KB |
Output is correct |
9 |
Correct |
89 ms |
10304 KB |
Output is correct |
10 |
Correct |
93 ms |
10312 KB |
Output is correct |