Compilare: main.cpp: In function 'int main()': main.cpp:13:37: warning: unused variable 'ct' [-Wunused-variable] int n,m,u,q,x,y,is,js,ij,jj,val,ct,i,k; ^~ main.cpp:13:42: warning: unused variable 'k' [-Wunused-variable] int n,m,u,q,x,y,is,js,ij,jj,val,ct,i,k; ^