"use strict"
function main(arg) {
    let tmp = arg.trim().split("\n")
    let [A,V] = tmp[0].split(" ").map(Number)
    let [B,W] = tmp[1].split(" ").map(Number)
    let T = Number(tmp[2])
    // let at = BigInt(A) + BigInt(V) * BigInt(T) //鬼
    // let bw = BigInt(B) + BigInt(W) * BigInt(T)
    let just = (B-A)/(V-W)
    if (Math.floor(just) !== just) {
        console.log('NO')
        return
    }
    if (just > T || just < 0) {
        console.log('NO')
        return
    }
    console.log('YES')
    // console.log(just)
    // if (at >= bw) {
    //     if (Math.floor(just) === just) {
    //         console.log('YES')
    //     } else {
    //         console.log('YES')
    //     }
    // } else {
    //     console.log('NO')
    // }
    // console.log([at,bw])
}
main(require('fs').readFileSync('/dev/stdin', 'utf8'));
