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#include <bits/stdc++.h>
#define lli long long int
using namespace std;
 
multimap<int , int> score;
map<int , int> num;
 
void increase(int x)
{
	map<int , int>::iterator num_it = num.find(x);
	if ( num_it == num.end() )
	{
		num[x] = 1;
		score.insert( make_pair( 1 , x ) );
	}
	else
	{
		score_it = (num_it->second);
		int cnt = score_it->first + 1;
		score.erase( score_it );
		num_it->second = score.insert( make_pair( cnt , x ) );
	}
}
 
int getMin()
{
	return score.begin()->second;
}
 
int main()
{	
	ios_base::sync_with_stdio(false);
	int n , m;
 
	cin>>n>>m;
	for (int i=0 ; i<n ; i++)
	{
		for (int j=0 ; j<m ; j++)
		{
			int x; cin>>x;
			increase(x); 
		}
 
		cout<<getMin()<<"\n";
	}
 
	return 0;
}

prog.cpp: In function 'void increase(int)':
prog.cpp:19:3: error: 'score_it' was not declared in this scope
   score_it = (num_it->second);
   ^
prog.cpp:22:18: error: cannot convert 'std::multimap<int, int>::iterator {aka std::_Rb_tree_iterator<std::pair<const int, int> >}' to 'int' in assignment
   num_it->second = score.insert( make_pair( cnt , x ) );
                  ^

Standard output is empty