02 Archery Tournament

function solve(input = []){
    let fields = input.shift().split('|');
    let points = 0;
    for(let i = 0; i < input.length; i++){
        if(input[i]  == 'Reverse')
            fields = fields.reverse();
        else if(input[i] == 'Game over')
            break;
        else {
            let [_, beginIndex, positions] = input[i].split('@');
            beginIndex = +beginIndex;
            positions = +positions;
            if(!(beginIndex < 0 || beginIndex > fields.length || positions == 0)){
                let index = beginIndex - positions;
                while(index < 0) index+=fields.length;
                while(index > fields.length) index -= fields.length;
                if(fields[index] <= 5){
                    points+=fields[index];
                    fields[index] = 0;
                }
                else {
                    points+=5;
                    fields[index] = fields[index] - 5;
                }
            }
        }
    }
    console.log(fields.join(' - '));
    console.log(`Iskren finished the archery tournament with ${points} points!`);
}