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