#include "validator.h"

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

#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define trav(i, a) for(auto& i : a)
#define all(x) begin(x), end(x)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;


void run() {
  int n = Int(2, 500);
  Endl();
  
  int tot_length = 0;
  for(int c1 = 0; c1 < n; c1++){
    for(int c2 = 0; c2 < n; c2++){
      string s = "";
      while(1){
        char ch = Char();
        if(ch == ' ' || ch == '\n')break;
        s += ch;
      }
      if(c1 == c2){
        assert(s == "*");
      }
      else{
        tot_length += s.length();
        for(int c3 = 0; c3 < s.length(); c3++){
          assert('a' <= s[c3] && s[c3] <= 'z');
        }
      }
    }
  }
  assert(tot_length <= 1000000);
}