Compilare: main.cpp: In function 'int main()': main.cpp:56:15: warning: unused variable 'elem' [-Wunused-variable] 56 | int t,n,k,elem,i,j; | ^~~~ main.cpp:56:22: warning: unused variable 'j' [-Wunused-variable] 56 | int t,n,k,elem,i,j; | ^ main.cpp:61:16: warning: iteration 1000004 invokes undefined behavior [-Waggressive-loop-optimizations] 61 | fact[i]=(1LL*fact[i-1]*i)%MOD; | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:60:14: note: within this loop 60 | for(i=1;i<=1000005;i++) | ~^~~~~~~~~