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