-- Atcoder https://atcoder.jp/contests/abc177/tasks/abc177_a

local input= io.read()
local d, t, s = string.match(input, "(%d+) (%d+) (%d+)")
d, t, s = tonumber(d), tonumber(t), tonumber(s)

if t * s >= d then
    print("yes")
else
    print("no")
end