Compilare: main.cpp: In function 'int main()': main.cpp:45:50: warning: unused variable 'divider' [-Wunused-variable] ll rez_init = FACT[n] * inv(pout(2,n/2)) % MOD, divider = 1; ^~~~~~~ main.cpp:44:11: warning: iteration 600054 invokes undefined behavior [-Waggressive-loop-optimizations] FACT[i] = (FACT[i-1] * i) % MOD; ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:43:18: note: within this loop for(ll i = 1; i <= MAXR; ++i) ~~^~~~~~~ main.cpp:42:10: warning: iteration 600053 invokes undefined behavior [-Waggressive-loop-optimizations] INV[i] = INV[MOD % i] * (MOD - MOD / i) % MOD; ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:41:18: note: within this loop for(ll i = 2; i <= MAXR; ++i) ~~^~~~~~~