National Day Training Day 2(10.2)

C : id
Score : 100
Diff : 5->2
Comment :
Examing 1 : Easy.
Examing 2 : ???????????????????
Examing 3 : (Write a commect)
Examing 4 : (_a_a_) (_b_a_a_) (insert…)
Examing 5 : OHHHHH
Examing 6 : (Writing code…)
Examing 7 : (Compile)
Finally :

(Appendix : code : )

#include 
using namespace std;

long long gt(int* freq) {
    int stp, nsql;
    long long basic;
    for (int i=0;i<26;i++) {
        if (freq[i] != 0) {
            basic=1; stp=i; nsql=freq[i];break;
        }
    }
    for (int i=stp+1;i<26;i++) {
        if (freq[i] != 0) {
            for (int j=1;j> n >> k;
    string s;cin >> s;
    int f[26];
    for (int i=0;i<26;i++) f[i] = 0;
    for (int i=0;i='a'&&s[i]<='z') f[s[i]-'a']++;
    }
    if (k==1) {
        long long v=0;
        for (int i=0;i<26;i++) {
            f[i]++;
            v += gt(f);
            f[i]--;
        }
        cout << v;
    }
    else if (k==2) {
        long long v=0;
        for (int i=0;i<26;i++) {
            f[i]++;
            for (int j=i;j<26;j++) {
                f[j]++;
                v += gt(f);
                f[j]--;
            }
            f[i]--;
        }
        cout << v;
    }
    else cout << gt(f);
    return 0;
}