最高分是多少——华为

华为——最高分是多少

#include<iostream>
using namespace std;
 
int main()
{
    int N, M;
    char c;
    int A, B;
    char co;
    int k;
    while (cin >> N >> M)
    {
        //学生数目和操作数目
        int *cj = new int[N + 1];
        int len = N + 1;
        cj[0] = -1;
        for (int i = 1; i <= N; i++)
            cin >> cj[i];
        while (M--)
        {
            int max = -1;
            cin >> c;
            cin >> A >> B;
            if ('Q' == c)
            {
                if (A > B)
                {
                    int tmp = A; A = B; B = tmp;
                }
                for (int j = A; j <= B; ++j)
                {
                    max = cj[j] > max ? cj[j] : max;
                }
                cout << max << endl;
            }
            else
            {
                cj[A] = B;
            }
        }
        delete[] cj;
    }
    return 0;
}