#include <bits/stdc++.h>

using namespace std;

int n;

struct part
{
    int A, W, S;
    int allW;
}parts[100008];

string anss;
int ans;

int main()
{
    freopen("building.in", "r", stdin);
    freopen("building.out", "w", stdout);

    iostream::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> n;

    int a, b;
    cin >> a >> parts[0].A >> parts[0].W >> parts[0].S;

    for(int i = 1; i < n; i++)
    {
        int indToPlace;
        int area, weight, space;

        cin >> indToPlace;
        cin >> area >> weight >> space;

        if(ans) continue;

        parts[i].A = area;
        parts[i].W = weight;
        parts[i].S = space;

        parts[indToPlace].allW += weight;

        if(parts[indToPlace].allW > parts[indToPlace].S)
        {
            ans = i + 1;
            anss = "COLLAPSE";
        }

        if(area > parts[indToPlace].A)
        {
            ans = i + 1;
            anss = "IMPOSSIBLE";
        }
    }

    if(ans)
    {
        cout << anss << " " << ans << endl;
        return 0;
    }

    cout << "OK\n";
}