Compilare: user.cpp: In function ‘bool cmp(int, int)’: user.cpp:17:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol[node].size(); i++) ^ user.cpp: In function ‘bool cmp2(int)’: user.cpp:29:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol[node].size() && i < Ans.size(); i++) ^ user.cpp:29:57: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol[node].size() && i < Ans.size(); i++) ^ user.cpp: In function ‘void DFS(int, int)’: user.cpp:56:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp: In function ‘void DFS2(int, int)’: user.cpp:70:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp:87:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp:98:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol[sol].size(); i++) ^ user.cpp:106:37: 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:120:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Ans.size(); i++) ^