Robotti

const readline = require("readline");

const r = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  terminal: false,
});

const main = (rooms, house) => {
  if (parseInt(rooms) !== house.length) return "0 0";

  let newHouse = house;
  let coins = 0;
  let steps = 0;

  while (newHouse.includes("*")) {
    const robotIndex = newHouse.indexOf("R");

    const rightSide = newHouse.slice(robotIndex);
    const right = rightSide.indexOf("*");

    const leftSide = newHouse.slice(0, robotIndex);
    const left =
      leftSide.lastIndexOf("*") === -1
        ? -1
        : leftSide.length - leftSide.lastIndexOf("*");

    if (right === left && right !== -1) {
      // If coins are equally distant, stop the robot.
      break;
    }

    // Move to the right if it's closer or if there is no left coin
    if (right < left || left === -1) {
      coins++;
      steps += right;
      const houseArr = newHouse.split("");
      houseArr.splice(robotIndex, 1, "O");
      houseArr.splice(robotIndex + right, 1, "R");
      newHouse = houseArr.join("");
    }
    // Move to the left if it's closer or if there is no right coin
    else if (left < right || right === -1) {
      coins++;
      steps += left;
      const houseArr = newHouse.split("");
      houseArr.splice(robotIndex, 1, "O");
      houseArr.splice(robotIndex - left, 1, "R");
      newHouse = houseArr.join("");
    }
  }

  return `${steps} ${coins}`;
};

let inputs = [];

r.on("line", (line) => {
  inputs.push(line);
  if (inputs.length === 2) {
    console.log(main(inputs[0], inputs[1]));
    r.close();
  }
});

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: ACCEPTED

Test 4

Group: 1, 2

Verdict: ACCEPTED

Test 5

Group: 1, 2

Verdict: ACCEPTED

Test 6

Group: 1, 2

Verdict: WRONG ANSWER

Test 7

Group: 1, 2

Verdict: WRONG ANSWER

Test 8

Group: 1, 2

Verdict: ACCEPTED

Test 9

Group: 1, 2

Verdict: ACCEPTED

Test 10

Group: 1, 2

Verdict: ACCEPTED

Test 11

Group: 1, 2

Verdict: WRONG ANSWER

Test 12

Group: 2

Verdict: ACCEPTED

Test 13

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 16

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 17

Group: 2

Verdict: ACCEPTED

Test 18

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 19

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 20

Group: 2

Verdict: ACCEPTED

Test 21

Group: 2

Verdict: ACCEPTED

Test 22

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 23

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 24

Group: 2

Verdict: TIME LIMIT EXCEEDED