Compilare: main.cpp: In function 'int main()': main.cpp:142:12: warning: this 'while' clause does not guard... [-Wmisleading-indentation] while( (!q.empty()) && i > q.front()) ^~~~~ main.cpp:146:16: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while' int f = q.size(); ^~~ main.cpp:146:20: warning: unused variable 'f' [-Wunused-variable] int f = q.size(); ^