这题在我看来最好的方法就是打表，而且数据也不大，在敲个函数把所有可能都输出存在数组里，然后就ac了！
#include<bits/stdc++.h>
using namespace std;
int a[591]={126,153,688,1206,1255,1260,1395,1435,1503,1530,1827,2187,3159,3784,6880,10251,10255,10426,10521,10525,10575,11259,11844,11848,12006,12060,12384,12505,12546,12550,12595,12600,12762,12843,12955,12964,13243,13545,13950,14035,14350,15003,15030,15246,15300,15435,15624,15795,16272,17325,17428,17437,17482,18225,18265,18270,19026,19215,21375,21586,21753,21870,25105,25375,25474,25510,28476,29632,31509,31590,33655,33696,36855,37840,37845,39784,41665,42898,44676,45684,45760,45864,47538,48672,49855,51759,52168,53865,56295,56875,62968,63895,67149,67392,67950,68800,71199,78975,100255,100525,101299,102051,102505,102510,102541,102550,102595,102942,102955,103968,104026,104260,104368,105021,105025,105075,105210,105250,105264,105295,105723,105750,107163,107329,108126,108135,108216,108612,108864,109525,110758,112468,112509,112590,114268,115672,115699,116478,116496,116725,116928,117067,118408,118440,118480,118575,118926,119848,120006,120060,120384,120600,120762,120843,121086,121576,121815,122746,122764,123084,123354,123538,123840,123894,124483,124488,124542,124978,125005,125050,125095,125248,125433,125460,125500,125950,125995,126000,126027,126108,126846,127417,127620,128403,128430,128943,129438,129505,129514,129550,129564,129595,129640,129775,129955,131242,132430,132565,132615,132655,133245,134275,134725,135045,135450,135828,135837,136525,136854,136948,138784,139500,139824,140035,140350,141345,142978,143500,143739,143793,145273,145314,145345,145683,146137,146520,146952,149364,149782,150003,150030,150246,150300,150435,150624,150826,152271,152406,152460,152608,152685,152946,153000,153436,154350,155277,156024,156240,156289,156325,156915,157950,158193,162072,162526,162720,162976,163255,163795,163854,163944,164583,165208,168520,171598,172246,172386,172822,173250,173925,174028,174082,174208,174280,174298,174370,174793,174802,174820,174982,175329,176215,178294,178942,179325,179428,179482,180225,180297,180621,182065,182250,182650,182700,182974,184126,186624,187029,189702,189742,190260,190827,191205,192150,192375,192685,192717,193257,193945,194229,197428,197482,197725,201852,205785,207391,208624,210375,210681,210753,211896,212868,213075,213466,213750,213759,214506,215086,215424,215455,215860,216733,217503,217530,217638,217854,218488,218700,223524,226498,226872,226876,227448,229648,231579,231673,233896,236754,236758,236925,238968,241506,241564,243175,245182,245448,246150,246928,250105,250510,251005,251050,251095,251896,253750,254740,255010,255100,256315,256410,256414,258795,259510,260338,261378,261783,262984,263074,263155,263736,267034,268398,279328,281736,283198,283648,284598,284760,285376,286416,286974,287356,289674,291375,291753,293625,295105,295510,296320,297463,297832,304717,307183,312475,312565,312655,312975,314199,314743,315009,315090,315490,315594,315625,315900,316255,319059,319536,325615,326155,326452,328419,328864,329346,329656,336195,336550,336960,338296,341284,341653,342688,346288,346725,346968,347913,352966,355995,361989,362992,365638,368104,368550,368784,369189,371893,373864,375156,375615,376992,378400,378418,378450,381429,384912,384925,386415,390847,392566,393246,393417,394875,397840,399784,404932,404968,414895,415575,416065,416259,416650,416988,419287,428980,429664,435784,439582,442975,446760,446976,447916,449676,449955,450688,451768,456840,457168,457600,458640,462672,465088,465984,468535,475380,475893,476892,486720,488592,489159,489955,490176,491688,493857,495328,497682,498550,515907,516879,517509,517590,519745,520168,520816,521608,521680,526792,529672,530379,531297,535968,536539,538650,549765,559188,562950,564912,567648,568750,571648,573768,588676,611793,611878,612598,614965,617728,618759,623758,629680,632875,638950,649638,661288,665919,667876,671409,671490,671944,673920,678892,679500,687919,688000,692712,697248,702189,702918,710496,711099,711909,711990,715959,719199,729688,736695,738468,741928,769792,773896,778936,782896,785295,789250,789525,789750,791289,792585,794088,798682,809919,809937,809964,815958,829696,841995,859968,899019,936985,939658,960988,1000255};
int main()
{
int n;
while(scanf("%d",&n)==1&&n)
{
for(int i=0;i<591;i++)
{
if(a[i]>=n)
{
printf("%d\n",a[i]);
break;
}
}
}
}