Compilare: main.cpp: In function 'int main()': main.cpp:31:9: warning: unused variable 't' [-Wunused-variable] int t,i,j; ^ main.cpp:31:13: warning: unused variable 'j' [-Wunused-variable] int t,i,j; ^ main.cpp:32:12: warning: unused variable 'cost1' [-Wunused-variable] ll ans,cost1=0,cost2=0; ^~~~~ main.cpp:32:20: warning: unused variable 'cost2' [-Wunused-variable] ll ans,cost1=0,cost2=0; ^~~~~