Submission #568668

#TimeUsernameProblemLanguageResultExecution timeMemory
568668Garguy22Utrka (COCI14_utrka)C++17
80 / 80
164 ms44056 KiB
#include <iostream>
#include <string>
#include <map>
using namespace std;

string str[1000007];
map<string, int> mp;

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);

	int n;
	cin >> n;
	for(int i = 0; i < 2*n-1; i++){
		cin >> str[i];
		mp[str[i]]++;
	}
	for(int i = 0; i < 2*n; i++){
		if(mp[str[i]] % 2){
			cout << str[i] << endl;
			return 0;
		}
	}

	return 0;
}
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