[每日一题]leetcode 633. 平方数之和

class Solution {
public:
    
    int a[100100];
    bool judgeSquareSum(int c) {
        long long i;
        for(i = 0; i < 100100 && i * i < INT_MAX; i++)
            a[i] = i * i;
        i--;
        for(; i >= 0; i--)
        {
            double tmp = sqrt((double)(c - a[i]));
            if(tmp == (floor)(tmp))
            {
                return 1;

            }
        }
        return 0;

    }
};