/*
VIM: let g:lcppflags="-std=c++11 -O2 -pthread"
VIM: let g:wcppflags="/O2 /EHsc /DWIN32"
VIM: let g:argv=""
*/
#include <iostream>
#include <stdexcept>
#include <vector>
#include <algorithm>
#include <string>

int solution( std::vector<int> & a ) 
{
	int max_e = 10001; //
	std::vector<int> c(max_e, 0);
	
	for ( auto e : a ) {
		++c[e];
	}

	int m = 0;
	int mi = 0;
	for ( auto it = c.begin(); it != c.end(); ++it ) {
		if (*it > m)
		{
			m = *it;
			mi = it - c.begin();
		}
	}
	return mi;
}

int main ( void )
{try{
#if 1
	std::vector<int> a = {
		0, 0, 1, 2, 0, 10000, 10000, 10000
	};

	std::cout << solution( a ) << std::endl;
	
#endif
	return 0;
}
catch ( const std::exception& e )
{
	std::cerr << std::endl
			<< "std::exception(\"" << e.what() << "\")." << std::endl;
	return 2;
}
catch ( ... )
{
	std::cerr  << std::endl
			<< "unknown exception." << std::endl;
	return 1;
}}

