High Jump

function solve(input) {
    let target = Number(input.shift());
    let begin = target - 30;
    let jump = Number(input.shift());
    let current = 0;
    let count = 0;

    for (let k = begin; k <= target; k += 5) {
        current = k;
        if (jump > k) {
            count++;
            jump = Number(input.shift());
        } else {
            fail = 0;
            for (n = 1; n <= 3; n++) {
                if (jump <= k) {
                    fail++;
                    count++;
                    jump = Number(input.shift());
                } else {
                    count++;
                    jump = Number(input.shift());
                    break;
                }
                if (fail === 3) {
                    console.log(`Tihomir failed at ${current}cm after ${count} jumps.`)
                    return;
                }
            }
        }
    }
    console.log(`Tihomir succeeded, he jumped over ${current}cm after ${count} jumps.`);
}
//solve([250, 225, 224, 225, 228, 231, 235, 234, 235]);
//solve([251, 205, 212, 213, 228, 229, 230, 235]);