Compilare: main.cpp: In function 'int main()': main.cpp:66:12: warning: unused variable 'j' [-Wunused-variable] long i,j,min_c,max_c,M=0,cost,t; ^ main.cpp:66:14: warning: unused variable 'min_c' [-Wunused-variable] long i,j,min_c,max_c,M=0,cost,t; ^~~~~ main.cpp:66:20: warning: unused variable 'max_c' [-Wunused-variable] long i,j,min_c,max_c,M=0,cost,t; ^~~~~ main.cpp:66:26: warning: unused variable 'M' [-Wunused-variable] long i,j,min_c,max_c,M=0,cost,t; ^ main.cpp:66:30: warning: unused variable 'cost' [-Wunused-variable] long i,j,min_c,max_c,M=0,cost,t; ^~~~ main.cpp:66:35: warning: unused variable 't' [-Wunused-variable] long i,j,min_c,max_c,M=0,cost,t; ^