Submission #2493476

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Source Code Expand

#include<iostream>
#include<vector>
#include<map>

int main() {
	int n,some;
	std::cin >> n;
	std::vector<int> type;
	std::map<int, int> m;
	for (int i = 0; i < n; i++) {
		std::cin >> some;
		if (m[some] == 0) {
			type.push_back(some);
		}
		m[some]++;
	}
	if (type.size() % 2 == 0) {
		std::cout << type.size() - 1 << std::endl;
	}
	else {
		std::cout << type.size() << std::endl;
	}

}

Submission Info

Judge Result