Compilare: main.cpp: In function 'int main()': main.cpp:149:5: warning: this 'while' clause does not guard... [-Wmisleading-indentation] while(!qa.empty() && !qb.empty()) ^~~~~ main.cpp:168:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'while' while(!qa.empty()){ ^~~~~