Compilare: main.cpp: In function 'int main()': main.cpp:12:18: warning: variable 'start' set but not used [-Wunused-but-set-variable] int n, k, start=1, end=1, last=1; ^~~~~ main.cpp:12:27: warning: variable 'end' set but not used [-Wunused-but-set-variable] int n, k, start=1, end=1, last=1; ^~~