#include <stdio>
#include <vector>
#include <deque>

#define NMAX 5000
#define push_back pb

vector<int> a[NMAX];
vector<int>::iterator it;
deque<int> dq;

void citire()
{
	int t,f,i,k;
	FILE *in  = fopen( "sortaret.in ", "r" );
	fscanf( in,"%i" "%i",&n &k);
	sum=
	for(i=1;i<=k;i++)
	{
		fscanf(in, "%i" "%i", &t &f)
		a[t].pb(f);
	}
}

void parcurgere()
{
	
	
}


int main()
{
	citire();
}