"use strict";

const main = arg => {
    const inputList = arg.trim().split("\n");
    // 回答を記述
    const A = parseInt(inputList[0].split(" ")[0]);
    const V = parseInt(inputList[0].split(" ")[1]);
    const B = parseInt(inputList[1].split(" ")[0]);
    const W = parseInt(inputList[1].split(" ")[1]);
    const T = parseInt(inputList[2].split(" ")[0]);

    // WがV以上だった場合、追いつけない
    if (V <= W) {
        console.log("NO");
    } else {

        const pointDiff = Math.abs(A - B);
        const speedDiff = V - W;
        if ((pointDiff % speedDiff == 0) && (pointDiff / speedDiff <= T)) {
            console.log("YES");
        } else {
            console.log("NO");
        }
    }
}

main(require('fs').readFileSync('/dev/stdin', 'utf8'));