museum.cpp: In function 'int64_t CountSimilarPairs(std::vector<int>, std::vector<int>, std::vector<int>)':
museum.cpp:7:9: error: ambiguating new declaration of 'int64_t CountSimilarPairs(std::vector<int>, std::vector<int>, std::vector<int>)'
int64_t CountSimilarPairs(vector<int> A,vector<int> B,vector<int> C) {
^~~~~~~~~~~~~~~~~
In file included from museum.cpp:1:0:
museum.h:3:11: note: old declaration 'long long int CountSimilarPairs(std::vector<int>, std::vector<int>, std::vector<int>)'
long long CountSimilarPairs(std::vector<int> B, std::vector<int> T, std::vector<int> G);
^~~~~~~~~~~~~~~~~