#include using namespace std; typedef signed long long ll; #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define FORR2(x,y,arr) for(auto& [x,y]:arr) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) template bool chmax(T &a, const T &b) { if(a bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;} //------------------------------------------------------- int N; int A[101010]; ll dp[101010][510]; ll S[101010]; const ll mo=1000000007; void solve() { int i,j,k,l,r,x,y; string s; cin>>N; S[0]=1; for(i=1;i<=N;i++) { cin>>x; S[i]+=S[i-1]; for(j=1;j<=500;j++) { S[i]+=dp[i][j]; dp[i+j][j]+=dp[i][j]; } S[i]%=mo; if(i==N) cout<