Compilare: main.cpp: In function 'int main()': main.cpp:59:5: warning: this 'while' clause does not guard... [-Wmisleading-indentation] 59 | while(!st.empty()) | ^~~~~ main.cpp:61:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while' 61 | return 0; | ^~~~~~ main.cpp:31:9: warning: variable 'last' set but not used [-Wunused-but-set-variable] 31 | int last=-1; | ^~~~