#include "souvenirs.h"
#include <utility>
#include <bits/stdc++.h>
using namespace std;
void buy_souvenirs(int N, long long P0) 
{
  pair<vector<int>, long long> res;
  if (N == 2)
  {
  	transaction(P0 - 1);
  	return;
  }
}
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