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 = 73383 # 目标值 BASE_VALUES = [38.5,44,61,70.5,75.5,93] # 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: 73383 ==== 尝试基础系数 ==== 找到 1 组1变量解: 1. 组合: a=38.5 (1 个有效解) 1. x=1203, a*x=73383.0, 总和=73383.0 [平衡解] 找到 15 组2变量解: 1. 组合: a=38.5, b=61 (15 个有效解) 1. x=732, y=741.0, a*x=28182.0, b*y=45201.0, 总和=73383.0 [平衡解] 2. x=854, y=664.0, a*x=32879.0, b*y=40504.0, 总和=73383.0 [平衡解] 3. x=122, y=1126.0, a*x=4697.0, b*y=68686.0, 总和=73383.0 [原始解] 4. x=244, y=1049.0, a*x=9394.0, b*y=63989.0, 总和=73383.0 [原始解] 5. x=366, y=972.0, a*x=14091.0, b*y=59292.0, 总和=73383.0 [原始解] 2. 组合: a=38.5, b=70.5 (13 个有效解) 1. x=681, y=669.0, a*x=26218.5, b*y=47164.5, 总和=73383.0 [平衡解] 2. x=540, y=746.0, a*x=20790.0, b*y=52593.0, 总和=73383.0 [平衡解] 3. x=117, y=977.0, a*x=4504.5, b*y=68878.5, 总和=73383.0 [原始解] 4. x=258, y=900.0, a*x=9933.0, b*y=63450.0, 总和=73383.0 [原始解] 5. x=399, y=823.0, a*x=15361.5, b*y=58021.5, 总和=73383.0 [原始解] 3. 组合: a=38.5, b=75.5 (12 个有效解) 1. x=600, y=666.0, a*x=23100.0, b*y=50283.0, 总和=73383.0 [平衡解] 2. x=751, y=589.0, a*x=28913.5, b*y=44469.5, 总和=73383.0 [平衡解] 3. x=147, y=897.0, a*x=5659.5, b*y=67723.5, 总和=73383.0 [原始解] 4. x=298, y=820.0, a*x=11473.0, b*y=61910.0, 总和=73383.0 [原始解] 5. x=449, y=743.0, a*x=17286.5, b*y=56096.5, 总和=73383.0 [原始解] 4. 组合: a=38.5, b=93 (10 个有效解) 1. x=534, y=568.0, a*x=20559.0, b*y=52824.0, 总和=73383.0 [平衡解] 2. x=720, y=491.0, a*x=27720.0, b*y=45663.0, 总和=73383.0 [平衡解] 3. x=162, y=722.0, a*x=6237.0, b*y=67146.0, 总和=73383.0 [原始解] 4. x=348, y=645.0, a*x=13398.0, b*y=59985.0, 总和=73383.0 [原始解] 5. x=906, y=414.0, a*x=34881.0, b*y=38502.0, 总和=73383.0 [原始解] 5. 组合: a=44, b=61 (27 个有效解) 1. x=671, y=719, a*x=29524.0, b*y=43859.0, 总和=73383.0 [平衡解] 2. x=732, y=675, a*x=32208.0, b*y=41175.0, 总和=73383.0 [平衡解] 3. x=61, y=1159, a*x=2684.0, b*y=70699.0, 总和=73383.0 [原始解] 4. x=122, y=1115, a*x=5368.0, b*y=68015.0, 总和=73383.0 [原始解] 5. x=183, y=1071, a*x=8052.0, b*y=65331.0, 总和=73383.0 [原始解] 6. 组合: a=44, b=70.5 (11 个有效解) 1. x=684, y=614.0, a*x=30096.0, b*y=43287.0, 总和=73383.0 [平衡解] 2. x=543, y=702.0, a*x=23892.0, b*y=49491.0, 总和=73383.0 [平衡解] 3. x=120, y=966.0, a*x=5280.0, b*y=68103.0, 总和=73383.0 [原始解] 4. x=261, y=878.0, a*x=11484.0, b*y=61899.0, 总和=73383.0 [原始解] 5. x=402, y=790.0, a*x=17688.0, b*y=55695.0, 总和=73383.0 [原始解] 7. 组合: a=44, b=75.5 (11 个有效解) 1. x=676, y=578.0, a*x=29744.0, b*y=43639.0, 总和=73383.0 [平衡解] 2. x=525, y=666.0, a*x=23100.0, b*y=50283.0, 总和=73383.0 [平衡解] 3. x=72, y=930.0, a*x=3168.0, b*y=70215.0, 总和=73383.0 [原始解] 4. x=223, y=842.0, a*x=9812.0, b*y=63571.0, 总和=73383.0 [原始解] 5. x=374, y=754.0, a*x=16456.0, b*y=56927.0, 总和=73383.0 [原始解] 8. 组合: a=44, b=93 (18 个有效解) 1. x=537, y=535, a*x=23628.0, b*y=49755.0, 总和=73383.0 [平衡解] 2. x=444, y=579, a*x=19536.0, b*y=53847.0, 总和=73383.0 [平衡解] 3. x=72, y=755, a*x=3168.0, b*y=70215.0, 总和=73383.0 [原始解] 4. x=165, y=711, a*x=7260.0, b*y=66123.0, 总和=73383.0 [原始解] 5. x=258, y=667, a*x=11352.0, b*y=62031.0, 总和=73383.0 [原始解] 9. 组合: a=61, b=61 (100 个有效解) 1. x=100, y=1103, a*x=6100.0, b*y=67283.0, 总和=73383.0 [平衡解] 2. x=99, y=1104, a*x=6039.0, b*y=67344.0, 总和=73383.0 [平衡解] 3. x=1, y=1202, a*x=61.0, b*y=73322.0, 总和=73383.0 [原始解] 4. x=2, y=1201, a*x=122.0, b*y=73261.0, 总和=73383.0 [原始解] 5. x=3, y=1200, a*x=183.0, b*y=73200.0, 总和=73383.0 [原始解] 10. 组合: a=61, b=70.5 (8 个有效解) 1. x=498, y=610.0, a*x=30378.0, b*y=43005.0, 总和=73383.0 [平衡解] 2. x=639, y=488.0, a*x=38979.0, b*y=34404.0, 总和=73383.0 [平衡解] 3. x=75, y=976.0, a*x=4575.0, b*y=68808.0, 总和=73383.0 [原始解] 4. x=216, y=854.0, a*x=13176.0, b*y=60207.0, 总和=73383.0 [原始解] 5. x=357, y=732.0, a*x=21777.0, b*y=51606.0, 总和=73383.0 [原始解] 11. 组合: a=61, b=75.5 (7 个有效解) 1. x=599, y=488.0, a*x=36539.0, b*y=36844.0, 总和=73383.0 [平衡解] 2. x=448, y=610.0, a*x=27328.0, b*y=46055.0, 总和=73383.0 [平衡解] 3. x=146, y=854.0, a*x=8906.0, b*y=64477.0, 总和=73383.0 [原始解] 4. x=297, y=732.0, a*x=18117.0, b*y=55266.0, 总和=73383.0 [原始解] 5. x=750, y=366.0, a*x=45750.0, b*y=27633.0, 总和=73383.0 [原始解] 12. 组合: a=61, b=93 (12 个有效解) 1. x=459, y=488, a*x=27999.0, b*y=45384.0, 总和=73383.0 [平衡解] 2. x=552, y=427, a*x=33672.0, b*y=39711.0, 总和=73383.0 [平衡解] 3. x=87, y=732, a*x=5307.0, b*y=68076.0, 总和=73383.0 [原始解] 4. x=180, y=671, a*x=10980.0, b*y=62403.0, 总和=73383.0 [原始解] 5. x=273, y=610, a*x=16653.0, b*y=56730.0, 总和=73383.0 [原始解] 13. 组合: a=70.5, b=75.5 (7 个有效解) 1. x=514, y=492.0, a*x=36237.0, b*y=37146.0, 总和=73383.0 [平衡解] 2. x=363, y=633.0, a*x=25591.5, b*y=47791.5, 总和=73383.0 [平衡解] 3. x=61, y=915.0, a*x=4300.5, b*y=69082.5, 总和=73383.0 [原始解] 4. x=212, y=774.0, a*x=14946.0, b*y=58437.0, 总和=73383.0 [原始解] 5. x=665, y=351.0, a*x=46882.5, b*y=26500.5, 总和=73383.0 [原始解] 14. 组合: a=70.5, b=93 (17 个有效解) 1. x=442, y=454.0, a*x=31161.0, b*y=42222.0, 总和=73383.0 [平衡解] 2. x=504, y=407.0, a*x=35532.0, b*y=37851.0, 总和=73383.0 [平衡解] 3. x=8, y=783.0, a*x=564.0, b*y=72819.0, 总和=73383.0 [原始解] 4. x=70, y=736.0, a*x=4935.0, b*y=68448.0, 总和=73383.0 [原始解] 5. x=132, y=689.0, a*x=9306.0, b*y=64077.0, 总和=73383.0 [原始解] 15. 组合: a=75.5, b=93 (5 个有效解) 1. x=462, y=414.0, a*x=34881.0, b*y=38502.0, 总和=73383.0 [平衡解] 2. x=276, y=565.0, a*x=20838.0, b*y=52545.0, 总和=73383.0 [平衡解] 3. x=90, y=716.0, a*x=6795.0, b*y=66588.0, 总和=73383.0 [原始解] 4. x=648, y=263.0, a*x=48924.0, b*y=24459.0, 总和=73383.0 [原始解] 5. x=834, y=112.0, a*x=62967.0, b*y=10416.0, 总和=73383.0 [原始解] 使用基础系数列表,共找到有效解 总耗时: 0.02秒