Compilare: main.cpp: In function 'void verif()': main.cpp:44:10: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(g[i].size()&1) ^~ main.cpp:46:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' g[0].push_back({i,m}); ^ main.cpp: In function 'void dfs(int)': main.cpp:59:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[k].size();i++) ~^~~~~~~~~~~~