Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:63:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Move[x][y].size(); i++) ^ user.cpp: In function ‘void Print()’: user.cpp:72:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol.size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:79:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tower8.out", "w", stdout); ^