Compilare: user.cpp: In function ‘bool cmp(int, int)’: user.cpp:16:39: 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:28:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol[node].size() && i < Ans.size(); i++) ^ user.cpp:28:57: 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:55:37: 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:69:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp:86:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp:97:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol[sol].size(); i++) ^ user.cpp:105:37: 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:118:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Ans.size(); i++) ^