Compilare: main.cpp: In function 'int main()': main.cpp:9:37: warning: variable 'last' set but not used [-Wunused-but-set-variable] int n, lt, ct, lm, cm, a, s, c, last, first, total, l; ^~~~ main.cpp:9:43: warning: variable 'first' set but not used [-Wunused-but-set-variable] int n, lt, ct, lm, cm, a, s, c, last, first, total, l; ^~~~~