func_code_string: #include <bits/stdc++.h>   #pragma GCC optimize( Ofast )   #pragma GCC target(         avx,avx2,fma,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native )   using namespace std;   long long MOD = 998244353;   long long INF = 1e18;   const int N = 100001;   long long dp[N][101];   long long sm[N];   long long cnt[N][101];   int main() {     ios::sync_with_stdio(0), cin.tie(0), cout.tie(0),         cout << fixed << setprecision(20);     long long n, k, len;     cin >> n >> k >> len;     if (len == 1) {       cout << 0;       return 0;     }     vector<long long> a(n + 1);     sm[0] = 1;     for (int i = 1; i <= n; i++) {       cin >> a[i];       for (int j = 1; j <= k; j++) {         cnt[i][j] = cnt[i - 1][j] + (a[i] == -1 || a[i] == j);         if (a[i] != -1 && j != a[i]) {           cnt[i][j] = 0;         }       }       if (a[i] != -1) {         dp[i][a[i]] += sm[i - 1];         if (cnt[i][a[i]] >= len) dp[i][a[i]] -= sm[i - len] - dp[i - len][a[i]];       } else {         for (int j = 1; j <= k; j++) {           dp[i][j] += sm[i - 1];           if (cnt[i][j] >= len) dp[i][j] -= sm[i - len] - dp[i - len][j];         }       }       for (int j = 1; j <= k; j++) {         dp[i][j] %= MOD;         dp[i][j] += MOD;         dp[i][j] %= MOD;         sm[i] += dp[i][j];         sm[i] %= MOD;       }     }     cout << sm[n];   }   