Compilare: main.cpp: In function 'int main()': main.cpp:48:21: warning: unused variable 'elem' [-Wunused-variable] 48 | long long t,n,k,elem,i,j,cat,rest; | ^~~~ main.cpp:48:28: warning: unused variable 'j' [-Wunused-variable] 48 | long long t,n,k,elem,i,j,cat,rest; | ^ main.cpp:53:16: warning: iteration 1000004 invokes undefined behavior [-Waggressive-loop-optimizations] 53 | fact[i]=(1LL*fact[i-1]*i)%MOD; | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:52:14: note: within this loop 52 | for(i=1;i<=1000005;i++) | ~^~~~~~~~~