function solve(arr) {


  let targets = arr.shift().split(' ').map(Number);

  let i = 0;




    while (arr[i] !== 'End') {

      let curr = arr[i].split(' ');


      switch (curr[0]) {

        case 'Shoot':

        if (Number(curr[1]) < targets.length && Number(curr[1]) >= 0) {

          targets[Number(curr[1])] -= Number(curr[2]);

          if (targets[Number(curr[1])] <= 0) {

            targets.splice(Number(curr[1]), 1);

          }

        }

        break;


        case 'Add':

          if (Number(curr[1]) < targets.length && Number(curr[1]) >= 0) {

            targets.splice(Number(curr[1]), 0, Number(curr[2]));

          } else {

            console.log(`Invalid placement!`);

          }

          break;


          case 'Strike':

          if (Number(curr[1]) + Number(curr[2]) < targets.length && Number(curr[1]) - Number(curr[2]) >= 0) {

              let deleteCount = Number(curr[2]) * 2 + 1;

              targets.splice(Number(curr[1]) - Number(curr[2]), deleteCount);

          } else {

            console.log(`Strike missed!`);

          }

          break;

      }

      i++;
    }


    console.log(targets.join('|'));


  }