UVa/10033 - Interpreter/Eondrej.c

   1 int r[12];
   2 int m[1200];
   3
   4 main() {
   5     int i=0;
   6     int pc=0;
   7     int instr;
   8     while( scanf( "%u ", &m[i++] ) == 1 );
   9     for(instr=1;;instr++)
  10     switch( m[pc]/100 ) {
  11     case 1:
  12         printf( "%u\n", instr );
  13         exit(0);
  14     case 2:
  15         r[m[pc]/10-20] = m[pc]%10;
  16         r[m[pc]/10-20] %= 1000;
  17         pc++;
  18         break;
  19     case 3:
  20         r[m[pc]/10-30] += m[pc]%10;
  21         r[m[pc]/10-30] %= 1000;
  22         pc++;
  23         break;
  24     case 4:
  25         r[m[pc]/10-40] *= m[pc]%10;
  26         r[m[pc]/10-40] %= 1000;
  27         pc++;
  28         break;
  29     case 5:
  30         r[m[pc]/10-50] = r[m[pc]%10];
  31         pc++;
  32         break;
  33     case 6:
  34         r[m[pc]/10-60] += r[m[pc]%10];
  35         r[m[pc]/10-60] %= 1000;
  36         pc++;
  37         break;
  38     case 7:
  39         r[m[pc]/10-70] *= r[m[pc]%10];
  40         r[m[pc]/10-70] %= 1000;
  41         pc++;
  42         break;
  43     case 8:
  44         r[m[pc]/10-80] = m[r[m[pc]%10]];
  45         pc++;
  46         break;
  47     case 9:
  48         m[r[m[pc]%10]] = r[m[pc]/10-90] ;
  49         pc++;
  50         break;
  51     case 0:
  52         if( r[m[pc]%10] ) pc = r[m[pc]/10];
  53         else pc++;
  54         break;
  55     }
  56 }
  57