The generator matrix

 1  0  0  1  1  1  1  1  1  1  1  1  1  1  1  0  1  1 10  1  1 20  1  1  1  1  1  1 15  1  1  1  1 20  1 15  1 15  1  1  1  1  1  1  1  1  1  0  1  1  1 10  1  1  1  1  1  1  1  1  1  0 15  1  5  1  5  1  1  1  1  1 15  1  1  1  1 10  1  1  1  1  1  1  1  1  5  1  1  1
 0  1  0  0  5 20  5 16 21  8  1 22 24  7 12  1  7 12  1 18  9  1 14 23  3 11 16  4  1 14 13  4 11  1 10  1 13  1 21 21 20 15 18 12 14  0 16  1 18  9 23  1  5 19  7  2  9  8  5 15 17  1  1  4  5  4 15  5  1 23  0 11  1 11 23  3 13  1 19 21 18  4  6 17  5 14  1 23 15 15
 0  0  1  1 22 24  8 13  5 14 24 14 19 20  3  2 17  1 18  7 21  1 12 23 20 21 12  8  9  5 16 23 12 22 11  4  0  0  8 10  4 13 22  4 17  5 24  8  6 10 18 23 18  6  0  2 14 24 19 10 23 14 10  4  1 23  1  7 16 15 19 13 18 20  2 24  7 14 22 15  3  9 16 22  5 23  1  5 22 13
 0  0  0 15 15 15  0  0  0  0  0 10 10  0  0  5 10  5  5 15 15 20 20 15 10 20 15 15 10 10 10  5 10 15 10 20 15 15  5 15 10 15 20 15  0 20 20 15  0  0  0 20 10 10 20  0  5 10 20 10 15  5 20  0 20 20 10  5  5  5  5 20  0  5  5 15  0  0  5 10 10 20  5 20  5 10 10  0 10 20

generates a code of length 90 over Z25 who´s minimum homogenous weight is 343.

Homogenous weight enumerator: w(x)=1x^0+940x^343+1300x^344+436x^345+360x^346+880x^347+3900x^348+3120x^349+736x^350+920x^351+1320x^352+6280x^353+5000x^354+1208x^355+860x^356+1380x^357+7000x^358+5060x^359+924x^360+1080x^361+1640x^362+7140x^363+4200x^364+1284x^365+1000x^366+1100x^367+6040x^368+3640x^369+608x^370+560x^371+980x^372+3120x^373+2060x^374+260x^375+220x^376+200x^377+580x^378+620x^379+116x^380+28x^385+8x^390+8x^395+8x^405

The gray image is a code over GF(5) with n=450, k=7 and d=343.
This code was found by Heurico 1.16 in 13.6 seconds.