#include "souvenirs.h" #include <bits/stdc++.h> using namespace std; void buy_souvenirs(int N, long long P0) { //pair<vector<int>, long long> res = transaction(P0 - 1); // N, N - 1, N - 2, N - 3, N - 4, .. 1 for(int i = N - 1; i >= 1; --i) transaction(i); return; }