function [a,b,c,d] = MoneyExchange(m)
//== a = 100-baht banknote
//== b = 20-baht banknote
//== c = 10-baht coin
//== d = 1-baht coin

temp = floor(m/100);
if temp>0 then
   a = temp;
   m = m - 100*a;
else
   a = 0;
end
   
temp = floor(m/20);
if temp>0 then
   b = temp;
   m = m - 20*b;
else
   b = 0;
end

temp = floor(m/10);
if temp>0 then
   c = temp;
   m = m - 10*c;
else
   c = 0;
end

d = m;