Compilare: main.cpp: In function 'int main()': main.cpp:9:12: warning: unused variable 'i' [-Wunused-variable] int n, i, a, nr, sol, solnr, l; ^ main.cpp:9:15: warning: unused variable 'a' [-Wunused-variable] int n, i, a, nr, sol, solnr, l; ^ main.cpp:9:18: warning: unused variable 'nr' [-Wunused-variable] int n, i, a, nr, sol, solnr, l; ^~ main.cpp:32:26: warning: 'solnr' may be used uninitialized in this function [-Wmaybe-uninitialized] cout<<sol<<" "<<solnr; ^