#include <cstdio> #include <cstring> #include <iostream> #include <string> #include <cmath> #include <bitset> #include <vector> #include <map> #include <set> #include <queue> #include <deque> #include <algorithm> #include <complex> #include <unordered_map> #include <unordered_set> #include <random> #include <cassert> #include <fstream> #include <utility> #include <functional> #include <stack> #include <array> #include <list> #define popcount __builtin_popcount using namespace std; typedef long long int ll; typedef pair<int, int> P; int main() { int t; cin>>t; const ll MOD=1e9+7; while(t--){ int n; cin>>n; ll a[101]; for(int i=0; i<n; i++){ cin>>a[i]; } ll p=1; for(int i=0; i<n; i++) (p*=(a[i]+1))%=MOD; p=(p+MOD-1)%MOD; cout<<p<<endl; } return 0; }