#include using namespace std; typedef long long ll; typedef long double ld; #define REP(i, n) for (int i = 0; i < (n); ++i) #define REPR(i, n) for (int i = n - 1; i >= 0; --i) #define FOR(i, m, n) for (int i = m; i < n; ++i) #define FORR(i, m, n) for (int i = m; i >= n; --i) #define ALL(v) (v).begin(),(v).end() templatebool chmax(T &a, const T &b) { if (abool chmin(T &a, const T &b) { if (b> s; int n=s.size(); vector c(26); COMinit(); REP(i,n){ c[s[i]-'A']++; } ll ans=fac[n]; REP(i,26){ (ans*=finv[c[i]])%=mod; } cout << (ans-1+mod)%mod << endl; }