func_code_string: #include <bits/stdc++.h>   using namespace std;   const int MOD = 998244353;   const int N = 100010;   int a[N];   bool cont[110][N];   long long f[N][110], sumf[N];   int main() {     ios::sync_with_stdio(false);     int n, k, len;     cin >> n >> k >> len;     for (int i = 1; i <= n; i++) cin >> a[i];     for (int j = 1; j <= k; j++) {       int cnt = 0;       for (int i = 1; i <= n; i++) {         if (a[i] == -1 || a[i] == j)           cnt++;         else           cnt = 0;         if (cnt >= len) cont[j][i] = true;       }     }     f[0][0] = 1;     sumf[0] = 1;     for (int i = 1; i <= n; i++) {       if (a[i] == -1)         for (int j = 1; j <= k; j++) {           f[i][j] = sumf[i - 1];           if (cont[j][i]) f[i][j] -= sumf[i - len] - f[i - len][j];           sumf[i] = (sumf[i] + f[i][j]) % MOD;         }       else {         f[i][a[i]] = sumf[i - 1];         if (cont[a[i]][i]) f[i][a[i]] -= sumf[i - len] - f[i - len][a[i]];         sumf[i] = (sumf[i] + f[i][a[i]]) % MOD;       }     }     cout << (sumf[n] + MOD) % MOD <<   n ;   }   