第一题只过了45%，求帮看看问题 = =。 #include<iostream> #include<vector> using namespace std; int main() {     int t;     cin >> t;     int N;     for (int i = 0;i<t;++i)     {         vector<int>num;         int Result = 0;         cin >> N;         for (int i = 0;i < A;++i)         {             num.push_back(0);         }          int sum = 4 * N;         if (N == 0)         {             Result = 0;         }         else if (N == 1)         {             Result = 2;         }         else if (N == 3)         {             Result = 3;         }         else         {             for (int i = 1;i < sum + 1;++i)             {                 int x = ((N + 1)*i) % sum;                 if (num[x] == 1)                 {                     Result++;                     break;                 }                 else if (num[x] == 0)                 {                     num[x] = 1;                     Result++;                 }             }         }         cout << Result << endl;     } }