11490 &＃8211; Just Another Problem

option=com_onlinejudge&Itemid=8&page=show_problem&category=474&problem=2485&mosmsg=Submission+received+with+ID+13809788&＃8243; "> 化简一下得到6 i i + 7 a i = S
因为S非常大，所以去枚举厚度。这样仅仅要枚举到sqrt(S)就够了，复杂度能够接受

代码：

#include #include #include const long long MOD =100000007;long long n;int main() { while (~scanf("%lld", &n) && n) { int flag = 1; for (long long i = 1; i * i * 6