ZOJ-1608

计算几何，可多画几个图然后得出结论。。

#include<cstdio>int main(){double a, b, r1, r2;while (scanf("%lf%lf%lf%lf", &a, &b, &r1, &r2) != EOF)puts((r1 + r2) * (r1 + r2)< (a - r1 - r2) * (a - r1 - r2)+ (b - r1 - r2) * (b - r1 - r2) + 0.01 ?"Yes" : "No");return 0;}