Compilare: main.cpp: In function 'void DFS(int)': main.cpp:31:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<G[x].size(); ++i) ~^~~~~~~~~~~~ main.cpp:57:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j<G[x].size(); ++j) ~^~~~~~~~~~~~ main.cpp:56:13: warning: unused variable 'm' [-Wunused-variable] int m; ^ main.cpp: In function 'int main()': main.cpp:76:9: warning: unused variable 'i' [-Wunused-variable] int i,j; ^ main.cpp:76:11: warning: unused variable 'j' [-Wunused-variable] int i,j; ^ main.cpp: In function 'int detboss()': main.cpp:24:1: warning: control reaches end of non-void function [-Wreturn-type] } ^