Compilare: main.cpp: In function 'void prim(int)': main.cpp:51:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<L[poz].size();i++) ~^~~~~~~~~~~~~~ main.cpp:51:11: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=0;i<L[poz].size();i++) ^~~ main.cpp:59:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' j++; ^ main.cpp:31:17: warning: unused variable 'k' [-Wunused-variable] int i,poz,c,k=0; ^