Compilare: user.cpp: In function ‘void makePaths(int, int, int)’: user.cpp:68:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[node].size(); i++) { ~~^~~~~~~~~~~~~~~~ user.cpp:93:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[node].size(); i++) { ~~^~~~~~~~~~~~~~~~ user.cpp: In function ‘void reversePathsAndMakeTrees()’: user.cpp:104:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < paths.size(); i++) { ~~^~~~~~~~~~~~~~ user.cpp:110:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < aux.size(); j++) { ~~^~~~~~~~~~~~