char *data = (char *)addr;
    int size_of_part = size / THREADS;
    char * left[THREADS + 1];
    left[0] = data;
    for (int i = 1; i < THREADS; ++i) {
        left[i] = left[i - 1] + size_of_part;
        while (*left[i] >= '0' && *left[i] <= '9') {
            left[i]++;
        }
        if (left[i] < data + size) {
            left[i]++;
        }
    }
    left[THREADS] = data + size;
    int * count[THREADS];
    pthread_t threads[THREADS];