# Question:maple dosent solve my problem?

## Question:maple dosent solve my problem?

Maple 16

i have a assignment problem to optimize with 1200 variables and almost 1000 constraints. but maple couldnt solve it. anyone who can help me is welcome

or may i try another app?

thanks

this is the my model
tam2.mw

 > restart;
 >
 >
 > we:=[1,2,8,9,15,16,22,23,29,30];
 (1)
 > wd:=[3,4,5,6,7,10,11,12,13,14,17,18,19,20,21,24,25,26,27,28];
 (2)
 > #printlevel :=3;
 > for j from 1 to 30 do #her gündüz vardiyasında en az 4 hemşire bulunsun a[j]:=sum(x[i][j][1], i=1..20)>=4: end do;
 (3)
 > A := [seq(a[j],j=1..30)];
 (4)
 > #her gece vardiyasında en az 4 hemşire bulunsun for j from 1 to 30 do b[j]:=sum(x[i][j][2], i=1..20)>=4: end do;
 (5)
 >
 > B := [seq(b[j],j=1..30)];
 (6)
 > #her hemşire ayda en az 4 hafta içi gündüz vardiyasında çalışsın for i from 1 to 20 do c[i]:=sum(x[i][wd[k]][1], k=1..20)>=4: end do;
 (7)
 > C := [seq(c[i],i=1..20)];
 (8)
 > #her hemşire ayda en az 4 hafta içi gece vardiyasında çalışsın for i from 1 to 20 do d[i]:=sum(x[i][wd[k]][2], k=1..20)>=4: end do;
 (9)
 > dd:= [seq(d[i],i=1..20)];
 (10)
 > #her hemşire ayda en az 2 hafta sonu gündüz vardiyasında çalışsın for i from 1 to 20 do e[i]:=sum(x[i][we[k]][1], k=1..10)>=2; end do;
 (11)
 > E:= [seq(e[i],i=1..20)];
 (12)
 > #her hemşire ayda en az 2 hafta sonu gece vardiyasında çalışsın for i from 1 to 20 do f[i]:=sum(x[i][we[k]][2], k=1..10)>=2; end do;
 (13)
 > F:= [seq(f[i],i=1..20)];
 (14)
 > #gece vardiyasında çalışan hemşire ertesi gündüz ve gece vardiyalarında izinlidir for i from 1 to 20 do for j from 1 to 29 do g[i][j]:=2*x[i][j][2]+x[i][j+1][1]+x[i][j+1][2]<=2 end do; end do;
 > for i from 1 to 20 do g[i] := seq(g[i][j],j=1..29) end do;
 > g:= [seq(g[i],i=1..20)];
 > with(Optimization);
 > Minimize( sum(t[m], m=1..20),{A[],B[],C[],dd[],E[],F[],g[]}, assume = binary );