#include "souvenirs.h"
#include <utility>
#include <vector>
using namespace std;
void buy_souvenirs(int N, long long P0) {
  long long x = P0 - 1;
  for (int i = 0; i < N; i++) {
    for (int j = 0; j < i; j++) {
      transaction(N - i);
    }
  }
  return;
}
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