Compilare: user.cpp: In function ‘bool cmp(int, int)’: user.cpp:19:39: 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:31:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol[node].size() && i < Ans.size(); i++) ^ user.cpp:31:57: 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:58:37: 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:73:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp:101:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp:112:49: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol[Point[sol]].size(); i++) ^ user.cpp:122:37: 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:136:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Ans.size(); i++) ^