Compilare: main.cpp: In function 'int main()': main.cpp:25:9: warning: unused variable 'bigi' [-Wunused-variable] int bigi=-1, bigj=-1, bis=0, bjs=0; ^~~~ main.cpp:25:18: warning: unused variable 'bigj' [-Wunused-variable] int bigi=-1, bigj=-1, bis=0, bjs=0; ^~~~ main.cpp:25:27: warning: unused variable 'bis' [-Wunused-variable] int bigi=-1, bigj=-1, bis=0, bjs=0; ^~~ main.cpp:25:34: warning: unused variable 'bjs' [-Wunused-variable] int bigi=-1, bigj=-1, bis=0, bjs=0; ^~~