Compilare: user.cpp: In function ‘void Solve()’: user.cpp:57:15: warning: variable ‘x’ set but not used [-Wunused-but-set-variable] int i,cmb,x; ^ user.cpp:49:5: warning: assuming signed overflow does not occur when assuming that (X - c) > X is always false [-Wstrict-overflow] if(n < k) return 0; ^