** nothing but Extends Euclid Algorithm.
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| #include<stdio.h> | |
| int extends_euclid(int a,int b,int &x,int &y); | |
| int main() | |
| { | |
| int a,b,x,y; | |
| int d; | |
| while(scanf("%d %d",&a,&b)==2){ | |
| d=extends_euclid(a,b,x,y); | |
| if (a == b) { | |
| x = 0; | |
| y = 1; | |
| } | |
| printf("%d %d %d\n",x,y,d); | |
| } | |
| return 0; | |
| } | |
| int extends_euclid(int a,int b,int &x,int &y) | |
| { | |
| int x1,y1,d; | |
| if(a==0){ | |
| x=0; | |
| y=1; | |
| return b; | |
| } | |
| d=extends_euclid(b%a,a,x1,y1); | |
| x=y1-(b/a)*x1; | |
| y=x1; | |
| return d; | |
| } |
