#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[202020]; int S[202020]; ll sum; map V; ll dp[202020]; const ll mo=1000000007; void solve() { int i,j,k,l,r,x,y; string s; cin>>N; FOR(i,N) { cin>>A[i]; S[i+1]=S[i]^A[i]; } dp[N]=1; V[S[N]]=1; sum=1; for(i=N-1;i>=0;i--) { dp[i]=sum; if(V.count(S[i])) { (sum+=mo-V[S[i]])%=mo; } V[S[i]]=sum; (sum+=dp[i])%=mo; } cout<