#include <iostream>
#include <vector>
using namespace std;
int findOdd(const std::vector<int>& numbers);
int main() {
// your code goes here
int answ=0;
std::vector<int> a={20,1,-1,2,-2,3,3,5,5,1,2,4,20,4,-1,-2,5};
answ=findOdd(a);
cout << "ANSW="<<answ;
return 0;
}
int findOdd(const std::vector<int>& numbers){
int answ=0;
for (auto m : numbers) {
for (auto n : numbers) {
if (m==n) {
answ++;
}
}
if (answ%2!=0) {
return answ;
}
cout << answ <<"\n";
answ=0;
}
//your code here
}
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