Compilare: main.cpp: In function 'void solve()': main.cpp:117:49: warning: unused variable 'last' [-Wunused-variable] int st = 1,dr = v[N].val + v[N - 1].val,mij,last,i,j,f; ^~~~ main.cpp: In function 'int Check(int)': main.cpp:66:29: warning: 'poz' may be used uninitialized in this function [-Wmaybe-uninitialized] int k = 0,i,y,x,val,j,z,poz; ^~~