Compilare: main.cpp: In function 'void back(int)': main.cpp:36:17: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if (cnt==kp) ^~ main.cpp:38:21: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' ok=1; ^~ main.cpp:40:13: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:42:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' viz[v[k]]=0; ^~~ main.cpp: In function 'bool verif(int)': main.cpp:23:1: warning: control reaches end of non-void function [-Wreturn-type] } ^