hdu 1017
地址:http://acm.hdu.edu.cn/showproblem.php?pid=1017
题意:给定n,m,求满足(a^2+b^2+m)/(a*b)仍是整数的(a,b)的组数。
mark:n的值比较小,扫描一遍,也就100*100.
代码:
#include <stdio.h> int main() { int t,n,m,sum; int i,j,a,b; scanf("%d", &t); for(i = 0; i < t; i++) { if(i) puts(""); j = 1; while(~scanf("%d%d", &n, &m), (m || n)) { sum = 0; for(a = 1; a < n; a++) for(b = a+1; b < n; b++) if((a*a+b*b+m)%(a*b) == 0) sum++; printf("Case %d: %d\n", j++, sum); } } return 0; }