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float endP;
int r=int(random(0,255));
int g=int(random(0,255));
int b=int(random(0,255));
void setup(){
size(400,400);
background(255);
fill(r,g,b);
}
void draw(){
endP=map(second(),0,30,0,TWO_PI);
arc(width/2,height/2,150,150,0,endP);
if(second()>30){
endP=map(second(),30,60,TWO_PI,0);
fill(255);
}
}