Compilare: main.cpp: In function 'void eval()': main.cpp:16:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1; i<=n; i++) ^~~ main.cpp:17:28: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' cout<<act[i]<<" "; cout<<" "<<cmin.back(); ^~~~ main.cpp: In function 'int main()': main.cpp:60:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<bst.size(); i++) ~^~~~~~~~~~~