int maxBuckets(int[] sBucket, int[] eBucket, int numBuckets, int range) {
    var buckets = new int[range];
    for (var i=0; i<numBuckets; i=i+1;) {
        buckets[sBucket[i]] = buckets[sBucket[i]] + 1;
        buckets[eBucket[i]] = buckets[eBucket[i]] - 1;
    }
    var max = 0;
    var curr = 0;
    for (var i=0; i<range; i=i+1;) {
        curr = curr + buckets[i];
        if (curr > max) {
            max = curr;
        }
    }
    return max;
}

int program (int argc, string[] argv) {
    var s1 = new int[]{0, 1, 2, 3, 4};
    var e1 = new int[]{5, 6, 7, 8, 9};
    return maxBuckets(s1, e1, 5, 10);
}