Compilare: main.cpp: In function 'int main()': main.cpp:24:21: warning: unused variable 'st' [-Wunused-variable] int n,s,S,i,j,k,st,dr,mij,val,elem,x,m,nr; ^~ main.cpp:24:24: warning: unused variable 'dr' [-Wunused-variable] int n,s,S,i,j,k,st,dr,mij,val,elem,x,m,nr; ^~ main.cpp:24:27: warning: unused variable 'mij' [-Wunused-variable] int n,s,S,i,j,k,st,dr,mij,val,elem,x,m,nr; ^~~ main.cpp:24:31: warning: unused variable 'val' [-Wunused-variable] int n,s,S,i,j,k,st,dr,mij,val,elem,x,m,nr; ^~~ main.cpp:24:35: warning: unused variable 'elem' [-Wunused-variable] int n,s,S,i,j,k,st,dr,mij,val,elem,x,m,nr; ^~~~