#include <bits/stdc++.h> using namespace std; #define _p(...) (void)printf(__VA_ARGS__) #define forr(x,arr) for(auto&& x:arr) #define _overload3(_1,_2,_3,name,...) name #define _rep2(i,n) _rep3(i,0,n) #define _rep3(i,a,b) for(int i=int(a);i<int(b);++i) #define rep(...) _overload3(__VA_ARGS__,_rep3,_rep2,)(__VA_ARGS__) #define _rrep2(i,n) _rrep3(i,0,n) #define _rrep3(i,a,b) for(int i=int(b)-1;i>=int(a);i--) #define rrep(...) _overload3(__VA_ARGS__,_rrep3,_rrep2,)(__VA_ARGS__) #define ALL(x) (x).begin(), (x).end() #define BIT(n) (1LL<<(n)) #define SZ(x) ((int)(x).size()) #define fst first #define snd second using ll=long long;using pii=pair<int,int>;using vb=vector<bool>; using vi=vector<int>;using vvi=vector<vi>;using vvvi=vector<vvi>; using vl=vector<ll>;using vvl=vector<vl>;using vvvl=vector<vvl>; using vd=vector<double>;using vvd=vector<vd>;using vvvd=vector<vvd>; using vpii=vector<pii>;using vvpii=vector<vpii>;using vvvpii=vector<vvpii>; template <typename T> T read() {T t; cin >> t; return t;} void Main() { string S = read<string>(); int N = SZ(S); vl A(N); rep(i, N) A[i] = S[i] - '0'; vl &t = A; while (SZ(t) > 1) { vl u; rep(i, SZ(t)-1) { int t1 = t[i] + t[i+1]; int t2 = 1 + (t1 - 1) % 9; u.push_back(t2); } t = u; } int ans = 1 + (t[0] - 1) % 9; cout << ans << endl; } int main() { cin.tie(nullptr); ios::sync_with_stdio(false); int T = read<int>(); while (T--) Main(); return 0; }