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tommy@wanda ~/euler $ time ./24.php
Permutation:    INF
Set size:       1000

0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,41,276,576,536,786,549,707,504,
634,69,472,200,396,592,780,425,515,377,99,138,261,696,324,461,828,162,846,50,518,621,105,141,197,88,71,965,928,390,
238,271,877,784,364,857,572,134,911,118,875,867,552,444,348,386,929,667,55,618,379,502,871,898,960,363,942,399,959,80,
923,106,802,62,658,451,256,470,962,36,675,949,345,935,724,976,304,275,768,225,447,790,397,810,519,568,560,852,984,104,
665,308,374,43,931,906,116,516,456,407,812,816,525,65,240,761,990,490,794,389,896,145,264,588,292,941,674,557,612,973,
428,463,819,575,968,458,889,686,712,732,613,269,901,356,599,759,554,446,709,484,232,79,217,967,365,793,436,710,606,194,
775,151,246,956,994,974,216,290,904,796,252,352,589,748,537,977,258,119,54,87,749,410,155,541,501,362,795,24,343,167,
989,841,779,803,307,596,52,297,174,598,581,860,476,563,301,971,438,125,979,66,963,231,154,22,909,578,331,77,718,91,
815,746,597,182,108,799,708,762,211,756,384,809,102,527,763,671,808,766,684,726,701,495,868,683,465,993,226,773,695,455,
469,650,325,713,574,28,488,286,434,98,228,531,266,745,409,885,500,729,332,694,824,893,661,319,957,856,511,664,851,927,
39,697,922,751,117,419,822,753,645,764,394,33,313,517,521,340,395,874,950,347,316,978,653,739,107,662,207,530,295,915,
95,235,359,538,191,528,165,607,985,627,75,847,611,801,139,222,468,131,402,278,285,26,919,546,513,603,534,294,980,385,
913,74,239,214,699,926,405,831,961,277,553,329,157,907,938,177,92,755,100,861,952,32,580,440,870,640,413,208,886,830,
185,698,582,245,206,843,175,767,388,878,283,392,668,23,249,558,590,505,401,492,312,483,591,916,632,63,391,360,156,903,
59,115,47,420,121,250,328,164,142,752,677,946,387,305,73,366,318,195,772,866,660,113,120,770,450,996,787,499,834,754,
995,430,486,317,682,449,936,201,839,60,29,371,721,372,149,826,747,272,944,930,234,127,987,529,242,943,837,743,547,445,
383,178,189,656,173,734,564,479,93,792,270,628,146,464,273,281,820,818,370,890,49,556,393,623,872,421,690,260,57,584,
82,89,152,900,629,520,338,617,655,681,678,147,109,925,920,477,836,800,361,966,169,284,854,417,833,375,539,509,702,953,
481,298,454,688,876,376,741,719,910,643,637,257,821,112,523,838,714,367,700,176,466,648,685,213,400,218,309,782,565,570,
403,744,849,863,706,61,805,38,196,51,888,524,641,86,559,172,380,354,757,646,512,670,912,44,881,548,263,731,947,540,
864,90,918,229,879,289,369,615,491,299,777,202,730,103,788,460,624,227,497,951,320,940,282,70,654,322,42,303,166,587,
498,823,220,453,236,439,880,198,583,143,310,924,958,378,67,600,58,680,68,223,279,542,209,56,248,346,333,522,914,733,
892,789,474,887,132,128,475,573,137,705,610,902,693,163,728,493,448,241,609,215,765,905,350,83,300,334,806,398,514,489,
337,781,998,487,722,569,593,358,482,807,187,199,244,45,259,566,884,76,526,813,135,894,945,543,78,186,190,986,431,604,
704,738,649,811,133,659,934,237,972,46,785,467,510,442,416,725,638,124,412,673,357,727,478,188,274,988,40,48,342,247,
323,848,969,687,983,771,873,917,954,955,148,123,122,429,494,114,840,601,265,551,635,891,161,899,740,184,251,381,895,939,
622,327,219,480,651,532,798,616,459,496,171,96,850,657,908,406,267,577,339,288,605,555,192,545,336,508,845,30,180,193,
296,81,882,602,205,170,736,443,268,720,441,210,255,737,35,571,669,614,883,594,136,964,110,212,126,723,715,503,620,140,
160,933,835,562,859,435,85,179,462,561,975,507,625,585,533,168,94,485,679,647,652,150,311,181,937,254,101,814,676,992,
423,626,639,981,948,418,183,982,735,842,631,932,415,991,544,204,855,341,344,422,326,791,666,144,414,129,84,287,404,619,
535,703,471,335,302,750,853,153,433,224,776,970,644,827,262,159,432,760,921,663,711,37,742,865,817,633,473,351,72,349,
636,64,27,804,778,53,130,373,457,293,997,844,315,452,382,280,111,506,869,426,567,716,774,595,253,427,353,832,999,306,
717,783,34,97,825,437,769,897,203,230,550,221,689,758,862,672,858,691,330,408,424,321,31,314,368,642,630,291,829,692,
243,797,586,608,579,158,355,233,411,25

real    0m2.128s
user    0m1.860s
sys     0m0.100s