#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define ALL(v) v.begin(), v.end()
typedef long long ll;

#include <bits/stdc++.h>
using namespace std;
using namespace chrono;

int main(){
  int t;
  cin>>t;
  while(t--){
    ll n;
    cin>>n;
    int k=0;
    ll s=n;
    while(s>0){
      k++;
      s/=10;
    }
    ll m=1;
    rep(i,k) m*=10;
    m--;
    m-=n;
    cout<<m<<endl;
  }
  
  return 0; 
}