3楼: Originally posted by feign_te at 2013-11-28 00:14:51
相当于求11x+12y+13z=5000的解
由于是正整数 变量都有上限  果断历遍
b=zeros(25000,3);
k=0;
for x=1:500
  for y=1:450  
     z=(5000-11*x-12*y)/13;
     if z==fix(z) && z>0
     k=k+1; ...