AC了。经典问题，a*x+b*y+c = 0整数点，有些忘记了扩展欧几里德，复习一下。

1 #include 
     
       2 #include 
      
        3 #include 
       
         4 using namespace std ; 5 #define LL __int64 6 LL x,y; 7 LL ext_eulid(LL a,LL b) 8 { 9     LL t,d;10     if(b == 0)11     {12         x = 1;13         y = 0;14         return a;15     }16     d = ext_eulid(b,a%b);17     t = x;18     x = y;19     y = t - (a/b)*y;20     return d;21 }22 int main()23 {24     LL A,B,C,d;25     cin>>A>>B>>C;26     d = ext_eulid(A,B);27     if((-C)%d != 0)28     {29         printf("-1\n");30     }31     else32     {33         x = x*((-C)/d);34         y = y*((-C)/d);35         cout<
        
         <<" "<
         
          <