#include "souvenirs.h" #include <utility> #include <vector> #include <iostream> using namespace std; void buy_souvenirs(int N, long long P0) {; if (N == 2) { transaction(P0 - 1); } else if (N == 3) { transaction(P0 - 1); transaction((P0 - 1) / 2); } else { for (long long i = 1; i < N - 1; i++) { transaction(N - k); } } }

souvenirs.cpp: In function 'void buy_souvenirs(int, long long int)':
souvenirs.cpp:15:29: error: 'k' was not declared in this scope
   15 |             transaction(N - k);
      |                             ^