Counting sort 2

#include<bits/stdc++.h>
using namespace std;
int main()
{
  int min_cost[3] = {}, cnt_cost[3] = {};
  int n, mark, cost;
  string name, street;

  cin >> n;
  for(int i=0; i<n; ++i)
  {
    cin >> name >> street >> mark >> cost;
    int x = (mark - 92) / 3;
    if ( cost < min_cost[x] || min_cost[x] == 0 )
    {
      min_cost[x] = cost;
      cnt_cost[x] = 1;
    }
    else if ( cost == min_cost[x] )
      cnt_cost[x]++;
  }
  for(int i: cnt_cost) cout << i << " ";
}