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int q;//q´ú±íȹ×Ó
int k;//k´ú±í¿ã×Ó
int x;//x´ú±íЬ×Ó
System.out.println("ȹ×Ó"+"      ¿ã×Ó"+"      Ь×Ó");
//ȹ×Ó¡¢¿ã×Ó¡¢Ð¬×ÓÖÁÉÙÂòÒ»¼þ£¬×ܹ²Âò30¼þ£¬¹²1000Ôª¡£ 
for(q=1;q <1000/50;q++){
 
for(k=1;k <1000/40;k++){
   
  x=30-q-k;
if(q*50+k*40+x*30==1000){
   
System.out.println(q+"        "+k+"          "+x);
    }
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50q+40k=1000
q+k=30;

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