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Cod sursa(job #922320)
#include <fstream>
using namespace std;
ifstream in ("fotbal2.in"); ofstream out ("fotbal2.out");
int n,k;
int v[50002];
int win[50002];
int main()
{
in >> n >> k;
int iW=0;
for(int i = 0; i < k; i++)
{
int e1,e2;
in >> e1 >> e2;
if(v[e1]>=v[e2])
{
v[e1]--;v[e2]++;
win[iW++]=e2;
}
else
{
v[e1]++;v[e2]--;
win[iW++]=e1;
}
}
int maxP=0,minP=100000;
for(int i = 1; i <=n; i++)
{
if(v[i]>maxP)maxP=v[i];
if(v[i]<minP)minP=v[i];
}
out << maxP-minP << '\n';
for(int i = 0;i < iW; i++)
{
out << win[i] << '\n';
}
return 0;
}