Compilare: main.cpp: In function 'void do_fill(const std::vector<std::vector<bool> >&, std::vector<std::vector<int> >&, std::vector<std::pair<int, int> >&, int&)': main.cpp:17:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < harta.size(); ++i){ ~~^~~~~~~~~~~~~~ main.cpp:18:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < harta[0].size(); ++j){ ~~^~~~~~~~~~~~~~~~~ main.cpp:30:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(0 <= ln && ln < harta.size() && 0 <= cn && cn < harta[0].size() && ~~~^~~~~~~~~~~~~~ main.cpp:30:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(0 <= ln && ln < harta.size() && 0 <= cn && cn < harta[0].size() && ~~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'void make_arbore(const std::vector<std::vector<int> >&, std::vector<std::pair<int, int> >, std::vector<int>&, std::vector<std::vector<int> >&, int)': main.cpp:57:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(0 <= ln && ln < harta.size() && 0 <= cn && cn < harta[0].size() && ~~~^~~~~~~~~~~~~~ main.cpp:57:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(0 <= ln && ln < harta.size() && 0 <= cn && cn < harta[0].size() && ~~~^~~~~~~~~~~~~~~~~