在N个数中找出好数个数,我直接用的穷举法,但测试用例只通过了57%(并没报超过时间限制)。有人ac100%的吗?求解题思路 using namespace std; int isnotX(int a) { int temp = 0; if (a % 10 == 2 || a % 10 == 5 || a % 10 == 6 || a % 10 == 9 || a % 10 == 0 || a % 10 == 1 || a % 10 == 8) temp = 0; else temp = 1; if ((a / 10) == 0) return temp; else ret...