advent_of_code_opcodes.pde

String[] instructions = "3,225,1,225,6,6,1100,1,238,225,104,0,1101,11,91,225,1002,121,77,224,101,-6314,224,224,4,224,1002,223,8,223,1001,224,3,224,1,223,224,223,1102,74,62,225,1102,82,7,224,1001,224,-574,224,4,224,102,8,223,223,1001,224,3,224,1,224,223,223,1101,28,67,225,1102,42,15,225,2,196,96,224,101,-4446,224,224,4,224,102,8,223,223,101,6,224,224,1,223,224,223,1101,86,57,225,1,148,69,224,1001,224,-77,224,4,224,102,8,223,223,1001,224,2,224,1,223,224,223,1101,82,83,225,101,87,14,224,1001,224,-178,224,4,224,1002,223,8,223,101,7,224,224,1,223,224,223,1101,38,35,225,102,31,65,224,1001,224,-868,224,4,224,1002,223,8,223,1001,224,5,224,1,223,224,223,1101,57,27,224,1001,224,-84,224,4,224,102,8,223,223,1001,224,7,224,1,223,224,223,1101,61,78,225,1001,40,27,224,101,-89,224,224,4,224,1002,223,8,223,1001,224,1,224,1,224,223,223,4,223,99,0,0,0,677,0,0,0,0,0,0,0,0,0,0,0,1105,0,99999,1105,227,247,1105,1,99999,1005,227,99999,1005,0,256,1105,1,99999,1106,227,99999,1106,0,265,1105,1,99999,1006,0,99999,1006,227,274,1105,1,99999,1105,1,280,1105,1,99999,1,225,225,225,1101,294,0,0,105,1,0,1105,1,99999,1106,0,300,1105,1,99999,1,225,225,225,1101,314,0,0,106,0,0,1105,1,99999,1008,677,226,224,1002,223,2,223,1006,224,329,101,1,223,223,8,226,677,224,102,2,223,223,1005,224,344,101,1,223,223,1107,226,677,224,102,2,223,223,1006,224,359,101,1,223,223,1007,226,226,224,102,2,223,223,1006,224,374,101,1,223,223,7,677,677,224,102,2,223,223,1005,224,389,1001,223,1,223,108,677,677,224,1002,223,2,223,1005,224,404,101,1,223,223,1008,226,226,224,102,2,223,223,1005,224,419,1001,223,1,223,1107,677,226,224,102,2,223,223,1005,224,434,1001,223,1,223,1108,677,677,224,102,2,223,223,1006,224,449,1001,223,1,223,7,226,677,224,102,2,223,223,1005,224,464,101,1,223,223,1008,677,677,224,102,2,223,223,1005,224,479,101,1,223,223,1007,226,677,224,1002,223,2,223,1006,224,494,101,1,223,223,8,677,226,224,1002,223,2,223,1005,224,509,101,1,223,223,1007,677,677,224,1002,223,2,223,1006,224,524,101,1,223,223,107,226,226,224,102,2,223,223,1006,224,539,101,1,223,223,107,226,677,224,102,2,223,223,1005,224,554,1001,223,1,223,7,677,226,224,102,2,223,223,1006,224,569,1001,223,1,223,107,677,677,224,1002,223,2,223,1005,224,584,101,1,223,223,1107,677,677,224,102,2,223,223,1005,224,599,101,1,223,223,1108,226,677,224,102,2,223,223,1006,224,614,101,1,223,223,8,226,226,224,102,2,223,223,1006,224,629,101,1,223,223,108,226,677,224,102,2,223,223,1005,224,644,1001,223,1,223,108,226,226,224,102,2,223,223,1005,224,659,101,1,223,223,1108,677,226,224,102,2,223,223,1006,224,674,1001,223,1,223,4,223,99,226".split(",");
int[] base;

void setup() {
  base = new int[instructions.length];
  for(int i = 0; i < instructions.length; i++){
   base[i] = Integer.valueOf(instructions[i]); 
  }
  
  for (int noun = 0; noun < 100; noun++) {
    for (int verb = 0; verb < 100; verb++) {
      int res = run(noun, verb);
      if(res == 19690720){
        println(noun, verb, res);
        println(100*noun+verb);
      }
    }
  }
}

int run(int noun, int verb) {
  int[] op = base.clone();
  op[1] = noun;
  op[2] = verb;
  for (int i = 0; i < op.length; i++) {
    int code = op[i];
    if (code == 1) {
      op[op[i+3]] = op[op[i+1]] + op[op[i+2]];
      i += 3;
    } else if (code == 2) {
      op[op[i+3]] = op[op[i+1]] * op[op[i+2]];
      i += 3;
    } else if(code == 3){
      
    } else if(code == 4){
      
    } 
    else if (code == 99) {
      break;
    }
  } 
  return op[0];
}