#include #include #include #include #include using namespace std; #define int long long const int mod=1e9+7; vector S(vector A) { vector B; for(int k=0;k>N; vector arr(N), arr2, arr3; for(int i=0;i>arr[i]; arr2=S(arr); arr3=S(arr2); int sum=0; for(int i=0;i