#define L 2000000
long long I[L],F[L],R[L];C,i,T,N,K,M=1000000007;main(){for(;i<2;i++)I[i]=F[i]=R[i]=1;for(;i<L;i++)I[i]=(M-M/i)*I[M%i]%M,F[i]=i*F[i-1]%M,R[i]=I[i]*R[i-1]%M;for(scanf("%d",&T);T--;)if(scanf("\n%c(%d,%d)",&C,&N,&K),C-80)printf("%lld\n",N==-1&&!K?1:N<K?0:(__int128_t)F[N]*R[K]*R[N-K]%M,N=C-67?N+K-1:N);else printf("%lld\n",N<K?0:F[N]*R[N-K]%M);}