Compilare: main.cpp: In function 'void topsort(int)': main.cpp:21:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < L[x].size() ; i++) ~~^~~~~~~~~~~~~ main.cpp:21:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i = 0 ; i < L[x].size() ; i++) ^~~ main.cpp:25:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' REZ.push_back(x); ^~~