1n_res = 5; 2n_events = 22; 3n_prec = 50; 4source = 1; 5sink = 22; 6min_lvl = [0, -4, -1, -8, -8]; 7max_lvl = [5, 2, 6, 1, -2]; 8rr = [| 0, -1, 0, 0, 0, -1, -2, 0, 1, 2, 1, 0, 0, 0, 0, -1, 2, 2, 1, 0, 1, 0 9 | 0, 0, 0, 2, 2, 0, 0, -1, 0, -1, 2, -2, 2, -1, -2, -1, -1, -1, 2, 1, -2, 0 10 | 0, 0, 0, 1, 0, -1, 2, 1, 1, 2, -2, 0, 0, 0, 0, 1, -1, 0, 1, 0, 0, 0 11 | 0, -1, -1, 2, -1, 0, -1, -2, 0, -2, 1, 1, 0, 1, 0, 0, -1, -2, 0, -2, 0, 0 12 | 0, -1, 1, 0, 0, -2, -1, -2, 0, 0, -2, -2, -1, 0, 0, 0, 2, 0, 0, 0, 0, 0 |]; 13prec = [| 1, 0, 2 14 | 1, 0, 3 15 | 2, 0, 18 16 | 3, 0, 4 17 | 3, 0, 11 18 | 4, 0, 14 19 | 4, 1, 8 20 | 5, 6, 12 21 | 5, 5, 13 22 | 6, 13, 18 23 | 6, -33, 16 24 | 6, 2, 5 25 | 7, 0, 15 26 | 7, 0, 16 27 | 8, -67, 3 28 | 8, -46, 14 29 | 8, 6, 20 30 | 8, 12, 16 31 | 8, -46, 9 32 | 8, -40, 10 33 | 8, -49, 4 34 | 9, -59, 11 35 | 9, 0, 8 36 | 10, 22, 12 37 | 10, -20, 4 38 | 10, 19, 9 39 | 10, 5, 17 40 | 11, -50, 3 41 | 11, 6, 7 42 | 12, 3, 20 43 | 13, 16, 12 44 | 13, 0, 20 45 | 14, 9, 17 46 | 14, 0, 21 47 | 14, 5, 10 48 | 14, 5, 20 49 | 15, 13, 4 50 | 16, 21, 12 51 | 16, 16, 5 52 | 16, 19, 17 53 | 16, 13, 6 54 | 17, -35, 16 55 | 17, -48, 6 56 | 17, 15, 19 57 | 18, -50, 16 58 | 18, 0, 17 59 | 19, 9, 22 60 | 19, -52, 2 61 | 20, 2, 22 62 | 21, 5, 22 |]; 63