Compilare: user.cpp: In function ‘void Kosaraju1(int)’: user.cpp:15:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[node].size(); i++) ^ user.cpp: In function ‘void Kosaraju2(int)’: user.cpp:24:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < TG[node].size(); i++) ^ user.cpp: In function ‘void BuildGraph()’: user.cpp:45:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < G[i].size(); j++) ^ user.cpp: In function ‘void mark(int)’: user.cpp:59:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[node].size(); i++) ^ user.cpp: In function ‘void dfs(int)’: user.cpp:77:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[node].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:116:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[0].size(); i++) ^