Hi everyone, i'm kinda new to Processing so please be gentle.
I need to know if this is the best way to write the code of my application and what can i do to make it shorter :

1. 
   import ddf.minim.*;
   
   Minim minim;
   AudioPlayer player;
   AudioSample kick;
   
   PImage a;
   PImage b;
   PImage c;
   PImage d;
   PImage e;
   PImage f;
   PImage g;
   PImage h;
   PImage i;
   PImage l;
   PImage m;
   PImage n;
   PImage o;
   PImage p;
   PImage q;
   PImage r;
   PImage s;
   PImage t;
   PImage u;
   PImage v;
   PImage z;
   PImage a1;
   PImage a2;
   PImage a3;
   PImage a4;
   PImage a5;
   PImage a6;
   PImage a7;
   PImage a8;
   PImage a9;
   PImage a10;
   PImage a11;
   PImage a12;
   PImage a13;
   PImage a14;
   PImage a15;
   PImage a16;
   PImage a17;
   PImage a18;
   
   
   int randomx;
   int randomy;
   
   void setup()
   {
     size(351, 529, P2D);
     minim = new Minim(this);
     player = minim.loadFile("Pokémon Red_ Green and Blue OST - Cinnabar Island's Theme.mp3", 2048);
     player.play();
     kick = minim.loadSample("Cry.wav", 2048);
     frameRate(6);
     a = loadImage ("gameboy_color_by_pilotinspektor-d4koh34.png");
     b = loadImage("৳৳PO½Ké.png");
     c = loadImage("&▒FDÓ8▒.png");
     d = loadImage("8.png");
     e = loadImage("150px-P_sprite.png");
     f = loadImage("55px-Pokemon_Red_GPC_4B_8_4_8.png");
     g = loadImage("Glitch_Pokémon_Template_001.png");
     h = loadImage("Glitch_Pokémon_Template_002.png");
     i = loadImage("RB_Glitch_E2_Sprite.png");
     l = loadImage("AGsprite.png");
     m = loadImage("LM4image.png");
     n = loadImage("H_POKé.png");
     o = loadImage("Gmp1.png");
     p = loadImage("lol.png");
     q = loadImage("Gsprite.png");
     r = loadImage("1306695-missingno_super.png");
     s = loadImage("fight.png");
     t = loadImage("poke.png");
     u = loadImage("PkMn_n.png");
     v = loadImage("A_lowercase_color.png");
     z = loadImage("RBGlitch250s.png");
     a1 = loadImage("Wgdsprite.png");
     a2 = loadImage("GlitchEC-Sprite.png");
     a3 = loadImage("OPkMn4X.png");
     a4 = loadImage("Spr_1b_142_f.png");
     a5 = loadImage("YGlitch176.png");
     a6 = loadImage("Spr_1b_141_f.png");
     a7 = loadImage("P_Tsprite.png");
     a8 = loadImage("Missingno_Y.png");
     a9 = loadImage("Mp'u.png");
     a10 = loadImage("10-capture_02052010_093910.png");
     a11 = loadImage("PokedollarGlitch.png");
     a12 = loadImage("Ulsprite.png");
     a13 = loadImage("Ghost_I.png");
     a14 = loadImage("15px-94.png");
     a15 = loadImage("GlitchE0.png");
     a16 = loadImage("RBGlitch234.png");
     a17 = loadImage("m.png");
     a18 = loadImage("Missingno_RB.png");
    
   }
   
   void draw()
   {
    
     image(a,0,0);
     //image(b,random(276),random(221));
     //image(c,random(276),random(221));
     //image(d,random(276),random(221));
     //image(e,random(276),random(221));
     //image(f,random(276),random(221));
     //image(g,random(276),random(221));
     //image(h,random(276),random(221));
     //image(i,random(276),random(221));
     //image(l,random(276),random(221));
     //image(m,random(276),random(221));
     //image(n,random(276),random(221));
     //image(o,random(276),random(221));
     //image(p,random(276),random(221));
     //image(q,random(276),random(221));
     //image(r,random(276),random(221));
     //image(s,random(276),random(221));
     //image(t,random(276),random(221));
     //image(u,random(276),random(221));
     //image(v,random(276),random(221));
     //image(z,random(276),random(221));
     //image(a1,random(276),random(221));
     image(a2,random(276),random(221));
     image(a3,random(276),random(221));
     image(a4,random(276),random(221));
     image(a5,random(276),random(221));
     image(a6,random(276),random(221));
     image(a7,random(276),random(221));
     image(a8,random(276),random(221));
     image(a9,random(276),random(221));
     image(a10,random(276),random(221));
     image(a11,random(276),random(221));
     image(a12,random(276),random(221));
     image(a13,random(276),random(221));
     image(a14,random(276),random(221));
     image(a15,random(276),random(221));
     image(a16,random(276),random(221));
     image(a17,random(276),random(221));
     image(a18,random(276),random(221));
    
   }
   
   void keyPressed()
   {
     if ( key == 'a' ) kick.trigger();
   }
   
   void stop()
   {
     player.close();
     kick.close();
     minim.stop();
     super.stop();
   }