Buggy python submission (verdict: Time Limit Exceeded):
s = input()

last_num_list = [1111, 1112, 1113, 1114, 1115, 1116, 1117, 1118, 1119, 1121, 1122, 1123, 1124, 1125, 1126, 1127, 1128, 1129, 1131, 1132, 1133, 1134, 1135, 1136, 1137, 1138, 1139, 1141, 1142, 1143, 1144, 1145, 1146, 1147, 1148, 1149, 1151, 1152, 1153, 1154, 1155, 1156, 1157, 1158, 1159, 1161, 1162, 1163, 1164, 1165, 1166, 1167, 1168, 1169, 1171, 1172, 1173, 1174, 1175, 1176, 1177, 1178, 1179, 1181, 1182, 1183, 1184, 1185, 1186, 1187, 1188, 1189, 1191, 1192, 1193, 1194, 1195, 1196, 1197, 1198, 1199, 1211, 1212, 1213, 1214, 1215, 1216, 1217, 1218, 1219, 1221, 1222, 1223, 1224, 1225, 1226, 1227, 1228, 1229, 1231, 1232, 1233, 1234, 1235, 1236, 1237, 1238, 1239, 1241, 1242, 1243, 1244, 1245, 1246, 1247, 1248, 1249, 1251, 1252, 1253, 1254, 1255, 1256, 1257, 1258, 1259, 1261, 1262, 1263, 1264, 1265, 1266, 1267, 1268, 1269, 1271, 1272, 1273, 1274, 1275, 1276, 1277, 1278, 1279, 1281, 1282, 1283, 1284, 1285, 1286, 1287, 1288, 1289, 1291, 1292, 1293, 1294, 1295, 1296, 1297, 1298, 1299, 1311, 1312, 1313, 1314, 1315, 1316, 1317, 1318, 1319, 1321, 1322, 1323, 1324, 1325, 1326, 1327, 1328, 1329, 1331, 1332, 1333, 1334, 1335, 1336, 1337, 1338, 1339, 1341, 1342, 1343, 1344, 1345, 1346, 1347, 1348, 1349, 1351, 1352, 1353, 1354, 1355, 1356, 1357, 1358, 1359, 1361, 1362, 1363, 1364, 1365, 1366, 1367, 1368, 1369, 1371, 1372, 1373, 1374, 1375, 1376, 1377, 1378, 1379, 1381, 1382, 1383, 1384, 1385, 1386, 1387, 1388, 1389, 1391, 1392, 1393, 1394, 1395, 1396, 1397, 1398, 1399, 1411, 1412, 1413, 1414, 1415, 1416, 1417, 1418, 1419, 1421, 1422, 1423, 1424, 1425, 1426, 1427, 1428, 1429, 1431, 1432, 1433, 1434, 1435, 1436, 1437, 1438, 1439, 1441, 1442, 1443, 1444, 1445, 1446, 1447, 1448, 1449, 1451, 1452, 1453, 1454, 1455, 1456, 1457, 1458, 1459, 1461, 1462, 1463, 1464, 1465, 1466, 1467, 1468, 1469, 1471, 1472, 1473, 1474, 1475, 1476, 1477, 1478, 1479, 1481, 1482, 1483, 1484, 1485, 1486, 1487, 1488, 1489, 1491, 1492, 1493, 1494, 1495, 1496, 1497, 1498, 1499, 1511, 1512, 1513, 1514, 1515, 1516, 1517, 1518, 1519, 1521, 1522, 1523, 1524, 1525, 1526, 1527, 1528, 1529, 1531, 1532, 1533, 1534, 1535, 1536, 1537, 1538, 1539, 1541, 1542, 1543, 1544, 1545, 1546, 1547, 1548, 1549, 1551, 1552, 1553, 1554, 1555, 1556, 1557, 1558, 1559, 1561, 1562, 1563, 1564, 1565, 1566, 1567, 1568, 1569, 1571, 1572, 1573, 1574, 1575, 1576, 1577, 1578, 1579, 1581, 1582, 1583, 1584, 1585, 1586, 1587, 1588, 1589, 1591, 1592, 1593, 1594, 1595, 1596, 1597, 1598, 1599, 1611, 1612, 1613, 1614, 1615, 1616, 1617, 1618, 1619, 1621, 1622, 1623, 1624, 1625, 1626, 1627, 1628, 1629, 1631, 1632, 1633, 1634, 1635, 1636, 1637, 1638, 1639, 1641, 1642, 1643, 1644, 1645, 1646, 1647, 1648, 1649, 1651, 1652, 1653, 1654, 1655, 1656, 1657, 1658, 1659, 1661, 1662, 1663, 1664, 1665, 1666, 1667, 1668, 1669, 1671, 1672, 1673, 1674, 1675, 1676, 1677, 1678, 1679, 1681, 1682, 1683, 1684, 1685, 1686, 1687, 1688, 1689, 1691, 1692, 1693, 1694, 1695, 1696, 1697, 1698, 1699, 1711, 1712, 1713, 1714, 1715, 1716, 1717, 1718, 1719, 1721, 1722, 1723, 1724, 1725, 1726, 1727, 1728, 1729, 1731, 1732, 1733, 1734, 1735, 1736, 1737, 1738, 1739, 1741, 1742, 1743, 1744, 1745, 1746, 1747, 1748, 1749, 1751, 1752, 1753, 1754, 1755, 1756, 1757, 1758, 1759, 1761, 1762, 1763, 1764, 1765, 1766, 1767, 1768, 1769, 1771, 1772, 1773, 1774, 1775, 1776, 1777, 1778, 1779, 1781, 1782, 1783, 1784, 1785, 1786, 1787, 1788, 1789, 1791, 1792, 1793, 1794, 1795, 1796, 1797, 1798, 1799, 1811, 1812, 1813, 1814, 1815, 1816, 1817, 1818, 1819, 1821, 1822, 1823, 1824, 1825, 1826, 1827, 1828, 1829, 1831, 1832, 1833, 1834, 1835, 1836, 1837, 1838, 1839, 1841, 1842, 1843, 1844, 1845, 1846, 1847, 1848, 1849, 1851, 1852, 1853, 1854, 1855, 1856, 1857, 1858, 1859, 1861, 1862, 1863, 1864, 1865, 1866, 1867, 1868, 1869, 1871, 1872, 1873, 1874, 1875, 1876, 1877, 1878, 1879, 1881, 1882, 1883, 1884, 1885, 1886, 1887, 1888, 1889, 1891, 1892, 1893, 1894, 1895, 1896, 1897, 1898, 1899, 1911, 1912, 1913, 1914, 1915, 1916, 1917, 1918, 1919, 1921, 1922, 1923, 1924, 1925, 1926, 1927, 1928, 1929, 1931, 1932, 1933, 1934, 1935, 1936, 1937, 1938, 1939, 1941, 1942, 1943, 1944, 1945, 1946, 1947, 1948, 1949, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2111, 2112, 2113, 2114, 2115, 2116, 2117, 2118, 2119, 2121, 2122, 2123, 2124, 2125, 2126, 2127, 2128, 2129, 2131, 2132, 2133, 2134, 2135, 2136, 2137, 2138, 2139, 2141, 2142, 2143, 2144, 2145, 2146, 2147, 2148, 2149, 2151, 2152, 2153, 2154, 2155, 2156, 2157, 2158, 2159, 2161, 2162, 2163, 2164, 2165, 2166, 2167, 2168, 2169, 2171, 2172, 2173, 2174, 2175, 2176, 2177, 2178, 2179, 2181, 2182, 2183, 2184, 2185, 2186, 2187, 2188, 2189, 2191, 2192, 2193, 2194, 2195, 2196, 2197, 2198, 2199, 2211, 2212, 2213, 2214, 2215, 2216, 2217, 2218, 2219, 2221, 2222, 2223, 2224, 2225, 2226, 2227, 2228, 2229, 2231, 2232, 2233, 2234, 2235, 2236, 2237, 2238, 2239, 2241, 2242, 2243, 2244, 2245, 2246, 2247, 2248, 2249, 2251, 2252, 2253, 2254, 2255, 2256, 2257, 2258, 2259, 2261, 2262, 2263, 2264, 2265, 2266, 2267, 2268, 2269, 2271, 2272, 2273, 2274, 2275, 2276, 2277, 2278, 2279, 2281, 2282, 2283, 2284, 2285, 2286, 2287, 2288, 2289, 2291, 2292, 2293, 2294, 2295, 2296, 2297, 2298, 2299, 2311, 2312, 2313, 2314, 2315, 2316, 2317, 2318, 2319, 2321, 2322, 2323, 2324, 2325, 2326, 2327, 2328, 2329, 2331, 2332, 2333, 2334, 2335, 2336, 2337, 2338, 2339, 2341, 2342, 2343, 2344, 2345, 2346, 2347, 2348, 2349, 2351, 2352, 2353, 2354, 2355, 2356, 2357, 2358, 2359, 2361, 2362, 2363, 2364, 2365, 2366, 2367, 2368, 2369, 2371, 2372, 2373, 2374, 2375, 2376, 2377, 2378, 2379, 2381, 2382, 2383, 2384, 2385, 2386, 2387, 2388, 2389, 2391, 2392, 2393, 2394, 2395, 2396, 2397, 2398, 2399, 2411, 2412, 2413, 2414, 2415, 2416, 2417, 2418, 2419, 2421, 2422, 2423, 2424, 2425, 2426, 2427, 2428, 2429, 2431, 2432, 2433, 2434, 2435, 2436, 2437, 2438, 2439, 2441, 2442, 2443, 2444, 2445, 2446, 2447, 2448, 2449, 2451, 2452, 2453, 2454, 2455, 2456, 2457, 2458, 2459, 2461, 2462, 2463, 2464, 2465, 2466, 2467, 2468, 2469, 2471, 2472, 2473, 2474, 2475, 2476, 2477, 2478, 2479, 2481, 2482, 2483, 2484, 2485, 2486, 2487, 2488, 2489, 2491, 2492, 2493, 2494, 2495, 2496, 2497, 2498, 2499, 2511, 2512, 2513, 2514, 2515, 2516, 2517, 2518, 2519, 2521, 2522, 2523, 2524, 2525, 2526, 2527, 2528, 2529, 2531, 2532, 2533, 2534, 2535, 2536, 2537, 2538, 2539, 2541, 2542, 2543, 2544, 2545, 2546, 2547, 2548, 2549, 2551, 2552, 2553, 2554, 2555, 2556, 2557, 2558, 2559, 2561, 2562, 2563, 2564, 2565, 2566, 2567, 2568, 2569, 2571, 2572, 2573, 2574, 2575, 2576, 2577, 2578, 2579, 2581, 2582, 2583, 2584, 2585, 2586, 2587, 2588, 2589, 2591, 2592, 2593, 2594, 2595, 2596, 2597, 2598, 2599, 2611, 2612, 2613, 2614, 2615, 2616, 2617, 2618, 2619, 2621, 2622, 2623, 2624, 2625, 2626, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637, 2638, 2639, 2641, 2642, 2643, 2644, 2645, 2646, 2647, 2648, 2649, 2651, 2652, 2653, 2654, 2655, 2656, 2657, 2658, 2659, 2661, 2662, 2663, 2664, 2665, 2666, 2667, 2668, 2669, 2671, 2672, 2673, 2674, 2675, 2676, 2677, 2678, 2679, 2681, 2682, 2683, 2684, 2685, 2686, 2687, 2688, 2689, 2691, 2692, 2693, 2694, 2695, 2696, 2697, 2698, 2699, 2711, 2712, 2713, 2714, 2715, 2716, 2717, 2718, 2719, 2721, 2722, 2723, 2724, 2725, 2726, 2727, 2728, 2729, 2731, 2732, 2733, 2734, 2735, 2736, 2737, 2738, 2739, 2741, 2742, 2743, 2744, 2745, 2746, 2747, 2748, 2749, 2751, 2752, 2753, 2754, 2755, 2756, 2757, 2758, 2759, 2761, 2762, 2763, 2764, 2765, 2766, 2767, 2768, 2769, 2771, 2772, 2773, 2774, 2775, 2776, 2777, 2778, 2779, 2781, 2782, 2783, 2784, 2785, 2786, 2787, 2788, 2789, 2791, 2792, 2793, 2794, 2795, 2796, 2797, 2798, 2799, 2811, 2812, 2813, 2814, 2815, 2816, 2817, 2818, 2819, 2821, 2822, 2823, 2824, 2825, 2826, 2827, 2828, 2829, 2831, 2832, 2833, 2834, 2835, 2836, 2837, 2838, 2839, 2841, 2842, 2843, 2844, 2845, 2846, 2847, 2848, 2849, 2851, 2852, 2853, 2854, 2855, 2856, 2857, 2858, 2859, 2861, 2862, 2863, 2864, 2865, 2866, 2867, 2868, 2869, 2871, 2872, 2873, 2874, 2875, 2876, 2877, 2878, 2879, 2881, 2882, 2883, 2884, 2885, 2886, 2887, 2888, 2889, 2891, 2892, 2893, 2894, 2895, 2896, 2897, 2898, 2899, 2911, 2912, 2913, 2914, 2915, 2916, 2917, 2918, 2919, 2921, 2922, 2923, 2924, 2925, 2926, 2927, 2928, 2929, 2931, 2932, 2933, 2934, 2935, 2936, 2937, 2938, 2939, 2941, 2942, 2943, 2944, 2945, 2946, 2947, 2948, 2949, 2951, 2952, 2953, 2954, 2955, 2956, 2957, 2958, 2959, 2961, 2962, 2963, 2964, 2965, 2966, 2967, 2968, 2969, 2971, 2972, 2973, 2974, 2975, 2976, 2977, 2978, 2979, 2981, 2982, 2983, 2984, 2985, 2986, 2987, 2988, 2989, 2991, 2992, 2993, 2994, 2995, 2996, 2997, 2998, 2999, 3111, 3112, 3113, 3114, 3115, 3116, 3117, 3118, 3119, 3121, 3122, 3123, 3124, 3125, 3126, 3127, 3128, 3129, 3131, 3132, 3133, 3134, 3135, 3136, 3137, 3138, 3139, 3141, 3142, 3143, 3144, 3145, 3146, 3147, 3148, 3149, 3151, 3152, 3153, 3154, 3155, 3156, 3157, 3158, 3159, 3161, 3162, 3163, 3164, 3165, 3166, 3167, 3168, 3169, 3171, 3172, 3173, 3174, 3175, 3176, 3177, 3178, 3179, 3181, 3182, 3183, 3184, 3185, 3186, 3187, 3188, 3189, 3191, 3192, 3193, 3194, 3195, 3196, 3197, 3198, 3199, 3211, 3212, 3213, 3214, 3215, 3216, 3217, 3218, 3219, 3221, 3222, 3223, 3224, 3225, 3226, 3227, 3228, 3229, 3231, 3232, 3233, 3234, 3235, 3236, 3237, 3238, 3239, 3241, 3242, 3243, 3244, 3245, 3246, 3247, 3248, 3249, 3251, 3252, 3253, 3254, 3255, 3256, 3257, 3258, 3259, 3261, 3262, 3263, 3264, 3265, 3266, 3267, 3268, 3269, 3271, 3272, 3273, 3274, 3275, 3276, 3277, 3278, 3279, 3281, 3282, 3283, 3284, 3285, 3286, 3287, 3288, 3289, 3291, 3292, 3293, 3294, 3295, 3296, 3297, 3298, 3299, 3311, 3312, 3313, 3314, 3315, 3316, 3317, 3318, 3319, 3321, 3322, 3323, 3324, 3325, 3326, 3327, 3328, 3329, 3331, 3332, 3333, 3334, 3335, 3336, 3337, 3338, 3339, 3341, 3342, 3343, 3344, 3345, 3346, 3347, 3348, 3349, 3351, 3352, 3353, 3354, 3355, 3356, 3357, 3358, 3359, 3361, 3362, 3363, 3364, 3365, 3366, 3367, 3368, 3369, 3371, 3372, 3373, 3374, 3375, 3376, 3377, 3378, 3379, 3381, 3382, 3383, 3384, 3385, 3386, 3387, 3388, 3389, 3391, 3392, 3393, 3394, 3395, 3396, 3397, 3398, 3399, 3411, 3412, 3413, 3414, 3415, 3416, 3417, 3418, 3419, 3421, 3422, 3423, 3424, 3425, 3426, 3427, 3428, 3429, 3431, 3432, 3433, 3434, 3435, 3436, 3437, 3438, 3439, 3441, 3442, 3443, 3444, 3445, 3446, 3447, 3448, 3449, 3451, 3452, 3453, 3454, 3455, 3456, 3457, 3458, 3459, 3461, 3462, 3463, 3464, 3465, 3466, 3467, 3468, 3469, 3471, 3472, 3473, 3474, 3475, 3476, 3477, 3478, 3479, 3481, 3482, 3483, 3484, 3485, 3486, 3487, 3488, 3489, 3491, 3492, 3493, 3494, 3495, 3496, 3497, 3498, 3499, 3511, 3512, 3513, 3514, 3515, 3516, 3517, 3518, 3519, 3521, 3522, 3523, 3524, 3525, 3526, 3527, 3528, 3529, 3531, 3532, 3533, 3534, 3535, 3536, 3537, 3538, 3539, 3541, 3542, 3543, 3544, 3545, 3546, 3547, 3548, 3549, 3551, 3552, 3553, 3554, 3555, 3556, 3557, 3558, 3559, 3561, 3562, 3563, 3564, 3565, 3566, 3567, 3568, 3569, 3571, 3572, 3573, 3574, 3575, 3576, 3577, 3578, 3579, 3581, 3582, 3583, 3584, 3585, 3586, 3587, 3588, 3589, 3591, 3592, 3593, 3594, 3595, 3596, 3597, 3598, 3599, 3611, 3612, 3613, 3614, 3615, 3616, 3617, 3618, 3619, 3621, 3622, 3623, 3624, 3625, 3626, 3627, 3628, 3629, 3631, 3632, 3633, 3634, 3635, 3636, 3637, 3638, 3639, 3641, 3642, 3643, 3644, 3645, 3646, 3647, 3648, 3649, 3651, 3652, 3653, 3654, 3655, 3656, 3657, 3658, 3659, 3661, 3662, 3663, 3664, 3665, 3666, 3667, 3668, 3669, 3671, 3672, 3673, 3674, 3675, 3676, 3677, 3678, 3679, 3681, 3682, 3683, 3684, 3685, 3686, 3687, 3688, 3689, 3691, 3692, 3693, 3694, 3695, 3696, 3697, 3698, 3699, 3711, 3712, 3713, 3714, 3715, 3716, 3717, 3718, 3719, 3721, 3722, 3723, 3724, 3725, 3726, 3727, 3728, 3729, 3731, 3732, 3733, 3734, 3735, 3736, 3737, 3738, 3739, 3741, 3742, 3743, 3744, 3745, 3746, 3747, 3748, 3749, 3751, 3752, 3753, 3754, 3755, 3756, 3757, 3758, 3759, 3761, 3762, 3763, 3764, 3765, 3766, 3767, 3768, 3769, 3771, 3772, 3773, 3774, 3775, 3776, 3777, 3778, 3779, 3781, 3782, 3783, 3784, 3785, 3786, 3787, 3788, 3789, 3791, 3792, 3793, 3794, 3795, 3796, 3797, 3798, 3799, 3811, 3812, 3813, 3814, 3815, 3816, 3817, 3818, 3819, 3821, 3822, 3823, 3824, 3825, 3826, 3827, 3828, 3829, 3831, 3832, 3833, 3834, 3835, 3836, 3837, 3838, 3839, 3841, 3842, 3843, 3844, 3845, 3846, 3847, 3848, 3849, 3851, 3852, 3853, 3854, 3855, 3856, 3857, 3858, 3859, 3861, 3862, 3863, 3864, 3865, 3866, 3867, 3868, 3869, 3871, 3872, 3873, 3874, 3875, 3876, 3877, 3878, 3879, 3881, 3882, 3883, 3884, 3885, 3886, 3887, 3888, 3889, 3891, 3892, 3893, 3894, 3895, 3896, 3897, 3898, 3899, 3911, 3912, 3913, 3914, 3915, 3916, 3917, 3918, 3919, 3921, 3922, 3923, 3924, 3925, 3926, 3927, 3928, 3929, 3931, 3932, 3933, 3934, 3935, 3936, 3937, 3938, 3939, 3941, 3942, 3943, 3944, 3945, 3946, 3947, 3948, 3949, 3951, 3952, 3953, 3954, 3955, 3956, 3957, 3958, 3959, 3961, 3962, 3963, 3964, 3965, 3966, 3967, 3968, 3969, 3971, 3972, 3973, 3974, 3975, 3976, 3977, 3978, 3979, 3981, 3982, 3983, 3984, 3985, 3986, 3987, 3988, 3989, 3991, 3992, 3993, 3994, 3995, 3996, 3997, 3998, 3999, 4111, 4112, 4113, 4114, 4115, 4116, 4117, 4118, 4119, 4121, 4122, 4123, 4124, 4125, 4126, 4127, 4128, 4129, 4131, 4132, 4133, 4134, 4135, 4136, 4137, 4138, 4139, 4141, 4142, 4143, 4144, 4145, 4146, 4147, 4148, 4149, 4151, 4152, 4153, 4154, 4155, 4156, 4157, 4158, 4159, 4161, 4162, 4163, 4164, 4165, 4166, 4167, 4168, 4169, 4171, 4172, 4173, 4174, 4175, 4176, 4177, 4178, 4179, 4181, 4182, 4183, 4184, 4185, 4186, 4187, 4188, 4189, 4191, 4192, 4193, 4194, 4195, 4196, 4197, 4198, 4199, 4211, 4212, 4213, 4214, 4215, 4216, 4217, 4218, 4219, 4221, 4222, 4223, 4224, 4225, 4226, 4227, 4228, 4229, 4231, 4232, 4233, 4234, 4235, 4236, 4237, 4238, 4239, 4241, 4242, 4243, 4244, 4245, 4246, 4247, 4248, 4249, 4251, 4252, 4253, 4254, 4255, 4256, 4257, 4258, 4259, 4261, 4262, 4263, 4264, 4265, 4266, 4267, 4268, 4269, 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7852, 7853, 7854, 7855, 7856, 7857, 7858, 7859, 7861, 7862, 7863, 7864, 7865, 7866, 7867, 7868, 7869, 7871, 7872, 7873, 7874, 7875, 7876, 7877, 7878, 7879, 7881, 7882, 7883, 7884, 7885, 7886, 7887, 7888, 7889, 7891, 7892, 7893, 7894, 7895, 7896, 7897, 7898, 7899, 7911, 7912, 7913, 7914, 7915, 7916, 7917, 7918, 7919, 7921, 7922, 7923, 7924, 7925, 7926, 7927, 7928, 7929, 7931, 7932, 7933, 7934, 7935, 7936, 7937, 7938, 7939, 7941, 7942, 7943, 7944, 7945, 7946, 7947, 7948, 7949, 7951, 7952, 7953, 7954, 7955, 7956, 7957, 7958, 7959, 7961, 7962, 7963, 7964, 7965, 7966, 7967, 7968, 7969, 7971, 7972, 7973, 7974, 7975, 7976, 7977, 7978, 7979, 7981, 7982, 7983, 7984, 7985, 7986, 7987, 7988, 7989, 7991, 7992, 7993, 7994, 7995, 7996, 7997, 7998, 7999, 8111, 8112, 8113, 8114, 8115, 8116, 8117, 8118, 8119, 8121, 8122, 8123, 8124, 8125, 8126, 8127, 8128, 8129, 8131, 8132, 8133, 8134, 8135, 8136, 8137, 8138, 8139, 8141, 8142, 8143, 8144, 8145, 8146, 8147, 8148, 8149, 8151, 8152, 8153, 8154, 8155, 8156, 8157, 8158, 8159, 8161, 8162, 8163, 8164, 8165, 8166, 8167, 8168, 8169, 8171, 8172, 8173, 8174, 8175, 8176, 8177, 8178, 8179, 8181, 8182, 8183, 8184, 8185, 8186, 8187, 8188, 8189, 8191, 8192, 8193, 8194, 8195, 8196, 8197, 8198, 8199, 8211, 8212, 8213, 8214, 8215, 8216, 8217, 8218, 8219, 8221, 8222, 8223, 8224, 8225, 8226, 8227, 8228, 8229, 8231, 8232, 8233, 8234, 8235, 8236, 8237, 8238, 8239, 8241, 8242, 8243, 8244, 8245, 8246, 8247, 8248, 8249, 8251, 8252, 8253, 8254, 8255, 8256, 8257, 8258, 8259, 8261, 8262, 8263, 8264, 8265, 8266, 8267, 8268, 8269, 8271, 8272, 8273, 8274, 8275, 8276, 8277, 8278, 8279, 8281, 8282, 8283, 8284, 8285, 8286, 8287, 8288, 8289, 8291, 8292, 8293, 8294, 8295, 8296, 8297, 8298, 8299, 8311, 8312, 8313, 8314, 8315, 8316, 8317, 8318, 8319, 8321, 8322, 8323, 8324, 8325, 8326, 8327, 8328, 8329, 8331, 8332, 8333, 8334, 8335, 8336, 8337, 8338, 8339, 8341, 8342, 8343, 8344, 8345, 8346, 8347, 8348, 8349, 8351, 8352, 8353, 8354, 8355, 8356, 8357, 8358, 8359, 8361, 8362, 8363, 8364, 8365, 8366, 8367, 8368, 8369, 8371, 8372, 8373, 8374, 8375, 8376, 8377, 8378, 8379, 8381, 8382, 8383, 8384, 8385, 8386, 8387, 8388, 8389, 8391, 8392, 8393, 8394, 8395, 8396, 8397, 8398, 8399, 8411, 8412, 8413, 8414, 8415, 8416, 8417, 8418, 8419, 8421, 8422, 8423, 8424, 8425, 8426, 8427, 8428, 8429, 8431, 8432, 8433, 8434, 8435, 8436, 8437, 8438, 8439, 8441, 8442, 8443, 8444, 8445, 8446, 8447, 8448, 8449, 8451, 8452, 8453, 8454, 8455, 8456, 8457, 8458, 8459, 8461, 8462, 8463, 8464, 8465, 8466, 8467, 8468, 8469, 8471, 8472, 8473, 8474, 8475, 8476, 8477, 8478, 8479, 8481, 8482, 8483, 8484, 8485, 8486, 8487, 8488, 8489, 8491, 8492, 8493, 8494, 8495, 8496, 8497, 8498, 8499, 8511, 8512, 8513, 8514, 8515, 8516, 8517, 8518, 8519, 8521, 8522, 8523, 8524, 8525, 8526, 8527, 8528, 8529, 8531, 8532, 8533, 8534, 8535, 8536, 8537, 8538, 8539, 8541, 8542, 8543, 8544, 8545, 8546, 8547, 8548, 8549, 8551, 8552, 8553, 8554, 8555, 8556, 8557, 8558, 8559, 8561, 8562, 8563, 8564, 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8974, 8975, 8976, 8977, 8978, 8979, 8981, 8982, 8983, 8984, 8985, 8986, 8987, 8988, 8989, 8991, 8992, 8993, 8994, 8995, 8996, 8997, 8998, 8999, 9111, 9112, 9113, 9114, 9115, 9116, 9117, 9118, 9119, 9121, 9122, 9123, 9124, 9125, 9126, 9127, 9128, 9129, 9131, 9132, 9133, 9134, 9135, 9136, 9137, 9138, 9139, 9141, 9142, 9143, 9144, 9145, 9146, 9147, 9148, 9149, 9151, 9152, 9153, 9154, 9155, 9156, 9157, 9158, 9159, 9161, 9162, 9163, 9164, 9165, 9166, 9167, 9168, 9169, 9171, 9172, 9173, 9174, 9175, 9176, 9177, 9178, 9179, 9181, 9182, 9183, 9184, 9185, 9186, 9187, 9188, 9189, 9191, 9192, 9193, 9194, 9195, 9196, 9197, 9198, 9199, 9211, 9212, 9213, 9214, 9215, 9216, 9217, 9218, 9219, 9221, 9222, 9223, 9224, 9225, 9226, 9227, 9228, 9229, 9231, 9232, 9233, 9234, 9235, 9236, 9237, 9238, 9239, 9241, 9242, 9243, 9244, 9245, 9246, 9247, 9248, 9249, 9251, 9252, 9253, 9254, 9255, 9256, 9257, 9258, 9259, 9261, 9262, 9263, 9264, 9265, 9266, 9267, 9268, 9269, 9271, 9272, 9273, 9274, 9275, 9276, 9277, 9278, 9279, 9281, 9282, 9283, 9284, 9285, 9286, 9287, 9288, 9289, 9291, 9292, 9293, 9294, 9295, 9296, 9297, 9298, 9299, 9311, 9312, 9313, 9314, 9315, 9316, 9317, 9318, 9319, 9321, 9322, 9323, 9324, 9325, 9326, 9327, 9328, 9329, 9331, 9332, 9333, 9334, 9335, 9336, 9337, 9338, 9339, 9341, 9342, 9343, 9344, 9345, 9346, 9347, 9348, 9349, 9351, 9352, 9353, 9354, 9355, 9356, 9357, 9358, 9359, 9361, 9362, 9363, 9364, 9365, 9366, 9367, 9368, 9369, 9371, 9372, 9373, 9374, 9375, 9376, 9377, 9378, 9379, 9381, 9382, 9383, 9384, 9385, 9386, 9387, 9388, 9389, 9391, 9392, 9393, 9394, 9395, 9396, 9397, 9398, 9399, 9411, 9412, 9413, 9414, 9415, 9416, 9417, 9418, 9419, 9421, 9422, 9423, 9424, 9425, 9426, 9427, 9428, 9429, 9431, 9432, 9433, 9434, 9435, 9436, 9437, 9438, 9439, 9441, 9442, 9443, 9444, 9445, 9446, 9447, 9448, 9449, 9451, 9452, 9453, 9454, 9455, 9456, 9457, 9458, 9459, 9461, 9462, 9463, 9464, 9465, 9466, 9467, 9468, 9469, 9471, 9472, 9473, 9474, 9475, 9476, 9477, 9478, 9479, 9481, 9482, 9483, 9484, 9485, 9486, 9487, 9488, 9489, 9491, 9492, 9493, 9494, 9495, 9496, 9497, 9498, 9499, 9511, 9512, 9513, 9514, 9515, 9516, 9517, 9518, 9519, 9521, 9522, 9523, 9524, 9525, 9526, 9527, 9528, 9529, 9531, 9532, 9533, 9534, 9535, 9536, 9537, 9538, 9539, 9541, 9542, 9543, 9544, 9545, 9546, 9547, 9548, 9549, 9551, 9552, 9553, 9554, 9555, 9556, 9557, 9558, 9559, 9561, 9562, 9563, 9564, 9565, 9566, 9567, 9568, 9569, 9571, 9572, 9573, 9574, 9575, 9576, 9577, 9578, 9579, 9581, 9582, 9583, 9584, 9585, 9586, 9587, 9588, 9589, 9591, 9592, 9593, 9594, 9595, 9596, 9597, 9598, 9599, 9611, 9612, 9613, 9614, 9615, 9616, 9617, 9618, 9619, 9621, 9622, 9623, 9624, 9625, 9626, 9627, 9628, 9629, 9631, 9632, 9633, 9634, 9635, 9636, 9637, 9638, 9639, 9641, 9642, 9643, 9644, 9645, 9646, 9647, 9648, 9649, 9651, 9652, 9653, 9654, 9655, 9656, 9657, 9658, 9659, 9661, 9662, 9663, 9664, 9665, 9666, 9667, 9668, 9669, 9671, 9672, 9673, 9674, 9675, 9676, 9677, 9678, 9679, 9681, 9682, 9683, 9684, 9685, 9686, 9687, 9688, 9689, 9691, 9692, 9693, 9694, 9695, 9696, 9697, 9698, 9699, 9711, 9712, 9713, 9714, 9715, 9716, 9717, 9718, 9719, 9721, 9722, 9723, 9724, 9725, 9726, 9727, 9728, 9729, 9731, 9732, 9733, 9734, 9735, 9736, 9737, 9738, 9739, 9741, 9742, 9743, 9744, 9745, 9746, 9747, 9748, 9749, 9751, 9752, 9753, 9754, 9755, 9756, 9757, 9758, 9759, 9761, 9762, 9763, 9764, 9765, 9766, 9767, 9768, 9769, 9771, 9772, 9773, 9774, 9775, 9776, 9777, 9778, 9779, 9781, 9782, 9783, 9784, 9785, 9786, 9787, 9788, 9789, 9791, 9792, 9793, 9794, 9795, 9796, 9797, 9798, 9799, 9811, 9812, 9813, 9814, 9815, 9816, 9817, 9818, 9819, 9821, 9822, 9823, 9824, 9825, 9826, 9827, 9828, 9829, 9831, 9832, 9833, 9834, 9835, 9836, 9837, 9838, 9839, 9841, 9842, 9843, 9844, 9845, 9846, 9847, 9848, 9849, 9851, 9852, 9853, 9854, 9855, 9856, 9857, 9858, 9859, 9861, 9862, 9863, 9864, 9865, 9866, 9867, 9868, 9869, 9871, 9872, 9873, 9874, 9875, 9876, 9877, 9878, 9879, 9881, 9882, 9883, 9884, 9885, 9886, 9887, 9888, 9889, 9891, 9892, 9893, 9894, 9895, 9896, 9897, 9898, 9899, 9911, 9912, 9913, 9914, 9915, 9916, 9917, 9918, 9919, 9921, 9922, 9923, 9924, 9925, 9926, 9927, 9928, 9929, 9931, 9932, 9933, 9934, 9935, 9936, 9937, 9938, 9939, 9941, 9942, 9943, 9944, 9945, 9946, 9947, 9948, 9949, 9951, 9952, 9953, 9954, 9955, 9956, 9957, 9958, 9959, 9961, 9962, 9963, 9964, 9965, 9966, 9967, 9968, 9969, 9971, 9972, 9973, 9974, 9975, 9976, 9977, 9978, 9979, 9981, 9982, 9983, 9984, 9985, 9986, 9987, 9988, 9989, 9991, 9992, 9993, 9994, 9995, 9996, 9997, 9998, 9999, ]

res = 0

while len(s) >= 4:
    if int(s[-4:]) in last_num_list:
        for i in range(len(s) - 3):
            if int(s[i:]) % 2019 == 0:
                res += 1
        s = s[:-1]
    else:
        s = s[:-1]
    
print(res)

Fixed submission:
N = 2019
cnt = [0] * N
S = input()
ans = 0
for s in S:
    s = int(s)
    new = [0] * N
    for n in range(N):
        idx = (10 * n + s) % N
        new[idx] += cnt[n]
    cnt = new
    cnt[s] += 1
    ans += cnt[0]
print (ans)

Buggy python submission (verdict: Time Limit Exceeded):
s = input()

res = 0

if len(s) <= 3:
    print(res)
else:
    for i in range(len(s) - 3):
        for j in range(i + 4, len(s) + 1):
            if int(s[i:j]) % 2019 == 0:
                res += 1
    
    print(res)

Fixed submission:
N = 2019
cnt = [0] * N
S = input()
ans = 0
for s in S:
    s = int(s)
    new = [0] * N
    for n in range(N):
        idx = (10 * n + s) % N
        new[idx] += cnt[n]
    cnt = new
    cnt[s] += 1
    ans += cnt[0]
print (ans)