Compilare: main.cpp: In function 'void BFS(int)': main.cpp:32:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < w[x].size(); i ++) ~~^~~~~~~~~~~~~ main.cpp: In function 'void rez(int)': main.cpp:58:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < w[x].size(); i++) ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:86:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(x != y) ^~ main.cpp:88:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' w[y].push_back(x); ^