http://poj.org/problem?id=2577 //* @author mekarlos@gmail.com import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static void main(String[] args) throws IOException { BufferedReader stdin=new BufferedReader(new InputStreamReader(System.in)); int[] ram=new int[1000]; int[] reg=new int[10]; int pos=0; int num=1; while(stdin.ready()){ ram[pos++]=new Integer(stdin.readLine()); } pos=0; while(ram[pos]!=100){ switch(ram[pos]/100){ case 0: if(reg[ram[pos]%10]==0){ pos++; } else{ pos=reg[(ram[pos]%100)/10]; } break; case 2: reg[(ram[pos]%100)/10]=ram[pos]%10; reg[(ram[pos]%100)/10]%=1000; pos++; break; case 3: reg[(ram[pos]%100)/10]+=(ram[pos]%10); reg[(ram[pos]%100)/10]%=1000; pos++; break; case 4: reg[(ram[pos]%100)/10]*=(ram[pos]%10); reg[(ram[pos]%100)/10]%=1000; pos++; break; case 5: reg[(ram[pos]%100)/10]=reg[ram[pos]%10]; reg[(ram[pos]%100)/10]%=1000; pos++; break; case 6: reg[(ram[pos]%100)/10]+=reg[ram[pos]%10]; reg[(ram[pos]%100)/10]%=1000; pos++; break; case 7: reg[(ram[pos]%100)/10]*=reg[ram[pos]%10]; reg[(ram[pos]%100)/10]%=1000; pos++; break; case 8: reg[(ram[pos]%100)/10]=ram[reg[ram[pos]%10]]; pos++; break; case 9: ram[reg[ram[pos]%10]]=reg[(ram[pos]%100)/10]; pos++; break; } num++; } System.out.println(num); } }
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