python/TangDou/AcWing_TiGao/T5/JuZhengChengFa/P3193_BF.cpp

#include <bits/stdc++.h>

using namespace std;
int n, m, k;
string s;
int res;
/*
4 3 100
111

答案：81
*/
void dfs(int u, string t) {
    if (u == n) {
        if (t.find(s) == string::npos) res++;
        res = res % k;
        return;
    }
    for (int i = 0; i <= 9; i++) {
        t.push_back(i + '0');
        dfs(u + 1, t);
        t.pop_back();
    }
}
int main() {
    cin >> n >> m >> k;
    cin >> s;
    dfs(0, "");
    printf("%d\n", res);
    return 0;
}