let input = require('fs').readFileSync('/dev/stdin', 'utf8')
// let input = require('fs').readFileSync('./sample_a.txt', 'utf8')
.split(/\n| /)
.map(item => parseInt(item))
.slice(0,-1)

const [D, T, S] = input.map(item => parseInt(item))

let now = 0
let time = 0
while(now < D){
    now += S
    time++
}
console.log(time <= T ? "Yes" : "No")