codeforces C. Triangle

http://codeforces.com/contest/408/problem/C

思路：枚举一个边的点的横坐标。。

#include <cstdio>
#include <cmath>
#include <cstring>
#include <algorithm>
#define maxn 100010
#define ll long long
using namespace std;

int a,b;

int main()
{
    int y1,x2,y2;
    scanf("%d%d",&a,&b);
    for(int x1=1; x1<a; x1++)
    {
       y1=sqrt(a*a-x1*x1);
       if(a*a==x1*x1+y1*y1)
       {
          x2=y1*b/a;
          y2=x1*b/a;
          if(b*b==x2*x2+y2*y2&&y1!=y2)
          {
              printf("YES
");
               printf("%d %d
",0,0);
               printf("%d %d
",x1,y1);
               printf("%d %d
",-x2,y2);
               return 0;
          }
       }
    }
    printf("NO
");
    return 0;
}