Tournament

#include <bits/stdc++.h>
using namespace std;
typedef pair<int, int> pii;
int A[100][100] = {};

int main() {
  int k;
  cin >> k;
  vector<pii> v;
  for(int i=0; i<k; ++i)
  {
    int pnt;
    cin >> pnt;
    v.push_back( {pnt, i} );
  }

  for(int i=0; i<k; ++i)
  {
    sort(v.begin()+i, v.end());
    int j = i + 1;
    for( ; j < k && v[i].first > 0; ++j)
    {
      --v[i].first;
      --v[j].first;
      A[v[i].second][v[j].second] = A[v[j].second][v[i].second] = 1;
    }
    for( ; j < k; ++j)
    {
      v[j].first -= 2;
      A[v[i].second][v[j].second] = 0;
      A[v[j].second][v[i].second] = 2;
    }
  }

  for(int i=0; i<k; ++i)
  {
    for(int j=0; j<k; ++j)
      cout << A[i][j] << " ";
    cout << "\n";
  }
}