from itertools import combinations import time import threading from collections import defaultdict import math from multiprocessing import Pool # 配置参数(优化阈值) TARGET = 131335 # 目标值 BASE_VALUES = [36.5, 41.5, 59, 68.5, 74, 91.5] # 基础系数列表 FLUCTUATION = 1.0 # 系数波动范围 MAX_SOLUTIONS = 3 # 每个组合的最大解数量 SOLVER_TIMEOUT = 180 # 求解超时时间(秒) THREE_VAR_THRESHOLD = 259000 # 使用三个变量的阈值 PRODUCT_RANGE_THRESHOLD = 129000 # 乘积范围限制阈值 HIGH_TARGET_THRESHOLD = 259000 # 更高目标值阈值 SHOW_PROGRESS = True # 是否显示进度 MAX_SOLUTIONS_PER_COMB = 100 # 每个组合的最大解数量,用于提前终止 USE_MULTIPROCESSING = True # 是否使用多进程加速 def is_valid_product(p): """确保单个乘积不超过129000""" return p <= 129000 # 严格限制所有乘积不超过129000 def find_single_variable_solutions(values): """查找单个数的解(a*x = TARGET)""" solutions = [] for a in values: quotient = TARGET / a if quotient != int(quotient): continue x = int(quotient) if 1 <= x <= 10000 and is_valid_product(a * x): solutions.append((a, x)) if len(solutions) >= MAX_SOLUTIONS: break return solutions def find_two_variable_solutions(values): """优化的双变量求解算法,确保每个乘积不超过129000""" solutions = defaultdict(list) for i, a in enumerate(values): for b in values[i:]: seen_xy = set() # 调整x的最大值,确保a*x不超过129000 if max_x < min_x: continue x_count = max_x - min_x + 1 x_step = max(1, x_count // 1000) for x in range(min_x, max_x + 1, x_step): ax = a * x if ax > 129000: # 额外检查确保不超过129000 continue remainder = TARGET - ax if remainder < b: break if remainder > b * 10000: continue if remainder % b == 0: y = remainder // b by = b * y if 1 <= y <= 10000 and by <= 129000: # 确保b*y也不超过129000 xy_pair = (x, y) if a <= b else (y, x) if xy_pair not in seen_xy: seen_xy.add(xy_pair) solutions[(a, b)].append((a, x, b, y)) if len(solutions[(a, b)]) >= MAX_SOLUTIONS_PER_COMB: break return solutions def process_three_var_combination(args): """处理三变量组合的辅助函数,用于并行计算""" a, b, c, value_ranges, target = args solutions = [] seen_xyz = set() min_x, max_x = value_ranges[a] x_count = max_x - min_x + 1 x_step = max(1, x_count // 1000) for x in range(min_x, max_x + 1, x_step): ax = a * x if not is_valid_product(ax): continue remainder1 = target - ax if remainder1 < 0: break if max_y < min_y: continue y_count = max_y - min_y + 1 y_step = max(1, y_count // 100) for y in range(min_y, max_y + 1, y_step): by = b * y if not is_valid_product(by): continue remainder2 = remainder1 - by if remainder2 < 0: break if remainder2 > c * 10000: continue if remainder2 % c == 0: z = remainder2 // c if 1 <= z <= 10000 and is_valid_product(c * z): xyz_tuple = tuple(sorted([x, y, z])) if xyz_tuple not in seen_xyz: seen_xyz.add(xyz_tuple) solutions.append((a, x, b, y, c, z)) if len(solutions) >= MAX_SOLUTIONS_PER_COMB: return solutions return solutions def find_three_variable_solutions(values): """优化的三变量求解算法,确保每个乘积不超过129000""" solutions = defaultdict(list) sorted_values = sorted(values) # 预计算每个系数的有效范围,确保每个乘积不超过129000 value_ranges = {} for a in sorted_values: value_ranges[a] = (min_x, max_x) combinations_list = [] for i, a in enumerate(sorted_values): for j in range(i + 1, len(sorted_values)): b = sorted_values[j] for k in range(j + 1, len(sorted_values)): c = sorted_values[k] combinations_list.append((a, b, c, value_ranges, TARGET)) if USE_MULTIPROCESSING: with Pool() as pool: results = pool.map(process_three_var_combination, combinations_list) for i, (a, b, c, _, _) in enumerate(combinations_list): if results[i]: solutions[(a, b, c)] = results[i] else: total_combinations = len(combinations_list) for i, (a, b, c, _, _) in enumerate(combinations_list): res = process_three_var_combination((a, b, c, value_ranges, TARGET)) if res: solutions[(a, b, c)] = res if SHOW_PROGRESS and i % 10 == 0: print(f"\r三变量组合进度: {i}/{total_combinations} 组", end='') if SHOW_PROGRESS and not USE_MULTIPROCESSING: print(f"\r三变量组合进度: {total_combinations}/{total_combinations} 组 - 完成") return solutions def find_balanced_solutions(solutions, var_count, num=2): """从所有解中筛选出最平衡的解""" if var_count == 1 or not solutions: return solutions balanced = [] for sol in solutions: vars = sol[1::2] # 获取解中的变量值 diff = max(vars) - min(vars) # 计算变量之间的最大差值 balanced.append((diff, sol)) # 按差值排序,返回差值最小的解 return [s for _, s in sorted(balanced, key=lambda x: x[0])[:num]] def find_original_solutions(solutions, balanced_solutions, num=3): """从剩余解中获取原始顺序的解""" if not solutions: return [] remaining = [s for s in solutions if s not in balanced_solutions] return remaining[:num] def display_solutions(solutions_dict, var_count): """优化的解显示函数""" if not solutions_dict: return print(f"\n找到 {len(solutions_dict)} 组{var_count}变量解:") for i, (coeffs, pair_solutions) in enumerate(sorted(solutions_dict.items()), 1): balanced = find_balanced_solutions(pair_solutions, var_count) original = find_original_solutions(pair_solutions, balanced) all_display = balanced + original if var_count == 1: a = coeffs print(f"\n{i}. 组合: a={a} ({len(pair_solutions)} 个有效解)") elif var_count == 2: a, b = coeffs print(f"\n{i}. 组合: a={a}, b={b} ({len(pair_solutions)} 个有效解)") else: a, b, c = coeffs print(f"\n{i}. 组合: a={a}, b={b}, c={c} ({len(pair_solutions)} 个有效解)") for j, sol in enumerate(all_display, 1): tag = "[平衡解]" if j <= len(balanced) else "[原始解]" if var_count == 1: a, x = sol print(f" {j}. x={x}, a*x={a*x:.1f}, 总和={a*x:.1f} {tag}") elif var_count == 2: a, x, b, y = sol print(f" {j}. x={x}, y={y}, a*x={a*x:.1f}, b*y={b*y:.1f}, 总和={a*x + b*y:.1f} {tag}") else: a, x, b, y, c, z = sol print(f" {j}. x={x}, y={y}, z={z}, " f"a*x={a*x:.1f}, b*y={b*y:.1f}, c*z={c*z:.1f}, " f"总和={a*x + b*y + c*z:.1f} {tag}") def run_with_timeout(func, args=(), kwargs=None, timeout=SOLVER_TIMEOUT): """运行函数并设置超时限制""" if kwargs is None: kwargs = {} result = [] error = [] def wrapper(): try: result.append(func(*args, **kwargs)) except Exception as e: error.append(e) thread = threading.Thread(target=wrapper) thread.daemon = True thread.start() thread.join(timeout) if thread.is_alive(): print(f"警告: {func.__name__} 超时({timeout}秒),跳过此方法") return None if error: return result[0] def main(): print(f"目标值: {TARGET}") # 生成波动后的系数 FLUCTUATED_VALUES = [round(v - FLUCTUATION, 1) for v in BASE_VALUES] # 尝试基础系数 print(f"\n==== 尝试基础系数 ====") # 目标值255966 > 259000不成立,会按顺序尝试单、双、三变量解 base_solutions = { 'single': run_with_timeout(find_single_variable_solutions, args=(BASE_VALUES,)), 'two': run_with_timeout(find_two_variable_solutions, args=(BASE_VALUES,)), 'three': [] } has_solution = False # 显示单变量解 if base_solutions['single']: has_solution = True display_solutions({a: [sol] for a, sol in zip(BASE_VALUES, base_solutions['single']) if sol}, 1) # 显示双变量解 if base_solutions['two'] and len(base_solutions['two']) > 0: has_solution = True display_solutions(base_solutions['two'], 2) # 单变量和双变量都无解时,尝试三变量解 if not has_solution: print(f"\n==== 单变量和双变量无解,尝试三变量解 ====") base_solutions['three'] = run_with_timeout(find_three_variable_solutions, args=(BASE_VALUES,)) if base_solutions['three'] and len(base_solutions['three']) > 0: has_solution = True display_solutions(base_solutions['three'], 3) if has_solution: print(f"\n使用基础系数列表,共找到有效解") return # 如果基础系数没有找到解,尝试波动系数 print(f"\n==== 尝试波动系数 ====") fluctuated_solutions = { 'single': run_with_timeout(find_single_variable_solutions, args=(FLUCTUATED_VALUES,)), 'two': run_with_timeout(find_two_variable_solutions, args=(FLUCTUATED_VALUES,)), 'three': [] } has_solution = False # 显示单变量解 if fluctuated_solutions['single']: has_solution = True display_solutions({a: [sol] for a, sol in zip(FLUCTUATED_VALUES, fluctuated_solutions['single']) if sol}, 1) # 显示双变量解 if fluctuated_solutions['two'] and len(fluctuated_solutions['two']) > 0: has_solution = True display_solutions(fluctuated_solutions['two'], 2) # 单变量和双变量都无解时,尝试三变量解 if not has_solution: print(f"\n==== 单变量和双变量无解,尝试三变量解 ====") fluctuated_solutions['three'] = run_with_timeout(find_three_variable_solutions, args=(FLUCTUATED_VALUES,)) if fluctuated_solutions['three'] and len(fluctuated_solutions['three']) > 0: has_solution = True display_solutions(fluctuated_solutions['three'], 3) if has_solution: print(f"\n使用波动系数列表,共找到有效解") return # 如果所有系数集都没有找到解 print("\n没有找到符合条件的解,即使使用波动后的系数列表。") if __name__ == "__main__": main() print(f"\n总耗时: {time.time() - start_time:.2f}秒")
Standard input is empty
目标值: 131335 ==== 尝试基础系数 ==== 找到 14 组2变量解: 1. 组合: a=36.5, b=41.5 (14 个有效解) 1. x=1621, y=1739.0, a*x=59166.5, b*y=72168.5, 总和=131335.0 [平衡解] 2. x=1870, y=1520.0, a*x=68255.0, b*y=63080.0, 总和=131335.0 [平衡解] 3. x=127, y=3053.0, a*x=4635.5, b*y=126699.5, 总和=131335.0 [原始解] 4. x=376, y=2834.0, a*x=13724.0, b*y=117611.0, 总和=131335.0 [原始解] 5. x=625, y=2615.0, a*x=22812.5, b*y=108522.5, 总和=131335.0 [原始解] 2. 组合: a=36.5, b=59 (10 个有效解) 1. x=1492, y=1303.0, a*x=54458.0, b*y=76877.0, 总和=131335.0 [平衡解] 2. x=1138, y=1522.0, a*x=41537.0, b*y=89798.0, 总和=131335.0 [平衡解] 3. x=76, y=2179.0, a*x=2774.0, b*y=128561.0, 总和=131335.0 [原始解] 4. x=430, y=1960.0, a*x=15695.0, b*y=115640.0, 总和=131335.0 [原始解] 5. x=784, y=1741.0, a*x=28616.0, b*y=102719.0, 总和=131335.0 [原始解] 3. 组合: a=36.5, b=68.5 (9 个有效解) 1. x=1303, y=1223.0, a*x=47559.5, b*y=83775.5, 总和=131335.0 [平衡解] 2. x=892, y=1442.0, a*x=32558.0, b*y=98777.0, 总和=131335.0 [平衡解] 3. x=70, y=1880.0, a*x=2555.0, b*y=128780.0, 总和=131335.0 [原始解] 4. x=481, y=1661.0, a*x=17556.5, b*y=113778.5, 总和=131335.0 [原始解] 5. x=1714, y=1004.0, a*x=62561.0, b*y=68774.0, 总和=131335.0 [原始解] 4. 组合: a=36.5, b=74 (8 个有效解) 1. x=1066, y=1249.0, a*x=38909.0, b*y=92426.0, 总和=131335.0 [平衡解] 2. x=1510, y=1030.0, a*x=55115.0, b*y=76220.0, 总和=131335.0 [平衡解] 3. x=178, y=1687.0, a*x=6497.0, b*y=124838.0, 总和=131335.0 [原始解] 4. x=622, y=1468.0, a*x=22703.0, b*y=108632.0, 总和=131335.0 [原始解] 5. x=1954, y=811.0, a*x=71321.0, b*y=60014.0, 总和=131335.0 [原始解] 5. 组合: a=41.5, b=59 (9 个有效解) 1. x=1480, y=1185.0, a*x=61420.0, b*y=69915.0, 总和=131335.0 [平衡解] 2. x=1126, y=1434.0, a*x=46729.0, b*y=84606.0, 总和=131335.0 [平衡解] 3. x=64, y=2181.0, a*x=2656.0, b*y=128679.0, 总和=131335.0 [原始解] 4. x=418, y=1932.0, a*x=17347.0, b*y=113988.0, 总和=131335.0 [原始解] 5. x=772, y=1683.0, a*x=32038.0, b*y=99297.0, 总和=131335.0 [原始解] 6. 组合: a=41.5, b=68.5 (8 个有效解) 1. x=1387, y=1077.0, a*x=57560.5, b*y=73774.5, 总和=131335.0 [平衡解] 2. x=976, y=1326.0, a*x=40504.0, b*y=90831.0, 总和=131335.0 [平衡解] 3. x=154, y=1824.0, a*x=6391.0, b*y=124944.0, 总和=131335.0 [原始解] 4. x=565, y=1575.0, a*x=23447.5, b*y=107887.5, 总和=131335.0 [原始解] 5. x=1798, y=828.0, a*x=74617.0, b*y=56718.0, 总和=131335.0 [原始解] 7. 组合: a=41.5, b=74 (6 个有效解) 1. x=934, y=1251.0, a*x=38761.0, b*y=92574.0, 总和=131335.0 [平衡解] 2. x=1378, y=1002.0, a*x=57187.0, b*y=74148.0, 总和=131335.0 [平衡解] 3. x=490, y=1500.0, a*x=20335.0, b*y=111000.0, 总和=131335.0 [原始解] 4. x=1822, y=753.0, a*x=75613.0, b*y=55722.0, 总和=131335.0 [原始解] 5. x=2266, y=504.0, a*x=94039.0, b*y=37296.0, 总和=131335.0 [原始解] 8. 组合: a=41.5, b=91.5 (17 个有效解) 1. x=1015, y=975.0, a*x=42122.5, b*y=89212.5, 总和=131335.0 [平衡解] 2. x=832, y=1058.0, a*x=34528.0, b*y=96807.0, 总和=131335.0 [平衡解] 3. x=100, y=1390.0, a*x=4150.0, b*y=127185.0, 总和=131335.0 [原始解] 4. x=283, y=1307.0, a*x=11744.5, b*y=119590.5, 总和=131335.0 [原始解] 5. x=466, y=1224.0, a*x=19339.0, b*y=111996.0, 总和=131335.0 [原始解] 9. 组合: a=59, b=68.5 (8 个有效解) 1. x=1065, y=1000.0, a*x=62835.0, b*y=68500.0, 总和=131335.0 [平衡解] 2. x=791, y=1236.0, a*x=46669.0, b*y=84666.0, 总和=131335.0 [平衡解] 3. x=243, y=1708.0, a*x=14337.0, b*y=116998.0, 总和=131335.0 [原始解] 4. x=517, y=1472.0, a*x=30503.0, b*y=100832.0, 总和=131335.0 [原始解] 5. x=1339, y=764.0, a*x=79001.0, b*y=52334.0, 总和=131335.0 [原始解] 10. 组合: a=59, b=74 (29 个有效解) 1. x=963, y=1007, a*x=56817.0, b*y=74518.0, 总和=131335.0 [平衡解] 2. x=1037, y=948, a*x=61183.0, b*y=70152.0, 总和=131335.0 [平衡解] 3. x=75, y=1715, a*x=4425.0, b*y=126910.0, 总和=131335.0 [原始解] 4. x=149, y=1656, a*x=8791.0, b*y=122544.0, 总和=131335.0 [原始解] 5. x=223, y=1597, a*x=13157.0, b*y=118178.0, 总和=131335.0 [原始解] 11. 组合: a=59, b=91.5 (5 个有效解) 1. x=731, y=964.0, a*x=43129.0, b*y=88206.0, 总和=131335.0 [平衡解] 2. x=1097, y=728.0, a*x=64723.0, b*y=66612.0, 总和=131335.0 [平衡解] 3. x=365, y=1200.0, a*x=21535.0, b*y=109800.0, 总和=131335.0 [原始解] 4. x=1463, y=492.0, a*x=86317.0, b*y=45018.0, 总和=131335.0 [原始解] 5. x=1829, y=256.0, a*x=107911.0, b*y=23424.0, 总和=131335.0 [原始解] 12. 组合: a=68.5, b=74 (13 个有效解) 1. x=958, y=888.0, a*x=65623.0, b*y=65712.0, 总和=131335.0 [平衡解] 2. x=810, y=1025.0, a*x=55485.0, b*y=75850.0, 总和=131335.0 [平衡解] 3. x=70, y=1710.0, a*x=4795.0, b*y=126540.0, 总和=131335.0 [原始解] 4. x=218, y=1573.0, a*x=14933.0, b*y=116402.0, 总和=131335.0 [原始解] 5. x=366, y=1436.0, a*x=25071.0, b*y=106264.0, 总和=131335.0 [原始解] 13. 组合: a=68.5, b=91.5 (10 个有效解) 1. x=838, y=808.0, a*x=57403.0, b*y=73932.0, 总和=131335.0 [平衡解] 2. x=655, y=945.0, a*x=44867.5, b*y=86467.5, 总和=131335.0 [平衡解] 3. x=106, y=1356.0, a*x=7261.0, b*y=124074.0, 总和=131335.0 [原始解] 4. x=289, y=1219.0, a*x=19796.5, b*y=111538.5, 总和=131335.0 [原始解] 5. x=472, y=1082.0, a*x=32332.0, b*y=99003.0, 总和=131335.0 [原始解] 14. 组合: a=74, b=91.5 (9 个有效解) 1. x=704, y=866.0, a*x=52096.0, b*y=79239.0, 总和=131335.0 [平衡解] 2. x=887, y=718.0, a*x=65638.0, b*y=65697.0, 总和=131335.0 [平衡解] 3. x=155, y=1310.0, a*x=11470.0, b*y=119865.0, 总和=131335.0 [原始解] 4. x=338, y=1162.0, a*x=25012.0, b*y=106323.0, 总和=131335.0 [原始解] 5. x=521, y=1014.0, a*x=38554.0, b*y=92781.0, 总和=131335.0 [原始解] 使用基础系数列表,共找到有效解 总耗时: 0.02秒