Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:68:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp: In function ‘void precalcGG()’: user.cpp:112:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < Bic[i].size(); j++) ^ user.cpp:119:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 0; k < G[node].size(); k++) ^ user.cpp: In function ‘void precalcRoad(int, int, int, int)’: user.cpp:142:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Bic[bic].size(); i++) ^ user.cpp:181:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < X.size(); i++) ^ user.cpp: In function ‘void Solve()’: user.cpp:310:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < GG[node].size(); j++) ^ user.cpp:352:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Solution[0].size(); i++) ^ user.cpp:354:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Solution[1].size(); i++) ^ user.cpp:357:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Aux.size(); i++) ^