n, m = io.read("*n", "*n")
t = {}
sum = 0
rangemin = 1
found = false
for i = 1, n do
    t[i] = io.read("*n")
    sum = sum + t[i]
    if(sum == 777) then found = true break end
    while(777 < sum) do
        sum, rangemin = sum - t[rangemin], rangemin + 1
    end
    if(sum == 777) then found = true break end
end
if(not found) then
    for j = 2, m do
        sum = 0
        rangemin = 1
        for i = 1, n do
            t[i] = t[i] + io.read("*n")
            sum = sum + t[i]
            if(sum == 777) then found = true break end
            while(777 < sum) do
                sum, rangemin = sum - t[rangemin], rangemin + 1
            end
            if(sum == 777) then found = true break end
        end
        if(found) then break end
    end
end
if(found) then print("YES") else print("NO") end