#include <cstdio>
#include <cstring>
#include <string>
#include <cmath>
#include <cassert>
#include <iostream>
#include <algorithm>
#include <stack>
#include <queue>
#include <vector>
#include <set>
#include <map>
#include <bitset>
using namespace std;

#define repl(i,a,b) for(int i=(int)(a);i<(int)(b);i++)
#define rep(i,n) repl(i,0,n)
#define mp(a,b) make_pair(a,b)
#define pb(a) push_back(a)
#define all(x) (x).begin(),(x).end()
#define dbg(x) cout<<#x"="<<x<<endl
#define fi first
#define se second

#define INF 2147483600

int main(){
  int tc;
  cin>>tc;
  rep(loops, tc){
    string s;
    cin>>s;
    int n=s.length();
    vector<int> vec(n);
    rep(i,n) vec[i] = s[i]-'0';
    while(n>1){
      rep(i,n-1){
        vec[i] = vec[i]+vec[i+1];
        vec[i] = vec[i]%10 + vec[i]/10;
      }
      n--;
    }
    cout<<vec[0]<<endl;
  }

  return 0;
}