var test = function(should_break) {
    var total = 0;
    var streak = 1;

    for (var i = 0; i < 100; ++i) {
        if (should_break(total, streak, i)) {
            streak = 1;
        } else {
            let success = Math.random() < 0.5;
            total += (success ? 1 : -1) * streak;
            streak++;
        }
    }
    return total;
};


var test_strat = function(strat) {
    var stats = {
        "avg": 0,
        "num_pos": 0,
        "max": 0,
        "min": 0,
    };
    const n = 1000000;
    for (var i = 0; i < n; ++i) {
        let value = test(strat);
        stats['avg'] += value;
        stats['num_pos'] += (value > 0);
        stats['max'] = Math.max(stats['max'], value);
        stats['min'] = Math.min(stats['min'], value);
    }
    stats['avg'] /= n;
    stats['num_pos'] /= n;
    return stats;
};

test_strat(
    (total, streak, index) => total > (100 - index)
);