function pipes(str) {

    var f = str[0];
    var n = f.split("\n").map(Number);
    var V = Number(n[0]);
    var P1 = Number(n[1]);
    var P2 = Number(n[2]);
    var H = Number(n[3]);

    var fillingInLitres = H * (P1 + P2);
    var fillingPercent = fillingInLitres / V;
    var overflow = fillingInLitres - V;
    var p1ShareT = (P1 * H) / fillingInLitres;
    var p2ShareT = (P2 * H) / fillingInLitres;

    if (fillingInLitres <= V) {
        console.log("The pool is " + Math.floor(fillingPercent * 100) + "% full. Pipe 1: " + Math.floor(p1ShareT * 100) + "%. Pipe 2: " + Math.floor(p2ShareT * 100) + "%.");

    } else {
        console.log("For " + H + " hours the pool overflows with " + overflow + " liters.");
    }

}