Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:13:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();++i) ~^~~~~~~~~~~~~~ user.cpp: In function ‘void solveMic()’: user.cpp:38:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();++i) ~^~~~~~~~~~~~~~ user.cpp:47:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[pa].size();++j) ~^~~~~~~~~~~~~ user.cpp: In function ‘void solveMare()’: user.cpp:86:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();++i) ~^~~~~~~~~~~~~~ user.cpp:95:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[pa].size();++j) ~^~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:130:9: warning: overflow in implicit constant conversion [-Woverflow] mic=2e15; ^~~~ user.cpp:131:9: warning: overflow in implicit constant conversion [-Woverflow] sol=2e15; ^~~~ user.cpp:134:9: warning: overflow in implicit constant conversion [-Woverflow] mic=2e15; ^~~~