//1百钱买百鸡
#include<stdio.h>
void main(){
        int x , y , z;
        for (x=0;x<=100;x++)
          for(y=0;y<=100;y++){
            z=100-x-y;
            if (15*x+9*y+z==300)
            printf("x=%-4d  y=%-4d  z=%-4d \n",x,y,z);
    }
}