I don't understand what input/output logic expected. Every previous task provides function name and parameters. Here we don't have anything

typical dp problem with some tricky manipulation. Here is my python solution:

import collections


n,h,ii = map(int, input().split())
dp = [[0]*h for _ in range(n)]
for i in range(n):
    x = list(map(int, input().split()))
    for j in x[1:]: dp[i][j-1] += 1
last = collections.deque()
for j in range(h):
    x = last.popleft() if j >= ii else 0
    for i in range(n):
        dp[i][j] += max(0 if j == 0 else dp[i][j-1], x)
    last.append(max(k[j] for k in dp))
print(max(k[-1] for k in dp))

import java.io.IOException; import java.io.InputStream;

public class Solution {

public static void main(String[] args) throws IOException {
    InputReader reader = new InputReader(System.in);
    int N = reader.readInt();
    int H = reader.readInt();
    int I = reader.readInt();

int[][] people = new int[N][H]; for (int n=0; n

} int[][] save = new int[N][H]; int[] max = new int[H]; for (int n=0; n

} for (int h=1; h= I) { value = Math.max(value, max[h-I]);

} value += people[n][h]; maxPeople = Math.max(maxPeople, value); save[n][h] = value; } max[h] = maxPeople;

} int answer = 0; for (int n=0; n

static final class InputReader {
    private final InputStream stream;
    private final byte[] buf = new byte[1024];
    private int curChar;
    private int numChars;

    public InputReader(InputStream stream) {
        this.stream = stream;
    }


    private int read() throws IOException {
        if (curChar >= numChars) {
            curChar = 0;
            numChars = stream.read(buf);
            if (numChars <= 0) {
                return -1;
            }
        }
        return buf[curChar++];

            }

    public final int readInt() throws IOException {
        return (int)readLong();

            }

    public final long readLong() throws IOException {
        int c = read();
        while (isSpaceChar(c)) {
            c = read();
            if (c == -1) throw new IOException();

            }
        boolean negative = false;
        if (c == '-') {
            negative = true;
            c = read();


            }
        long res = 0;
        do {
            res *= 10;
            res += c - '0';


            c = read();
        } while (!isSpaceChar(c));
        return negative ? -res : res;

            }

    public final int[] readIntArray(int size) throws IOException {
        int[] array = new int[size];
        for (int i=0; i<size; i++) {
            array[i] = readInt();
        }
        return array;

            }

    public final long[] readLongArray(int size) throws IOException {
        long[] array = new long[size];
        for (int i=0; i<size; i++) {
            array[i] = readLong();
        }
        return array;
    }


    private boolean isSpaceChar(int c) {
        return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
    }
}

}

Python solution

n, h, hl = map(int, input().split())
cnt = f = [[0 for _ in range(1901)] for _ in range(1900)]
g = [0 for _ in range(1901)]
for ctr in range(n):
    lis = list(map(int, input().split()))
    for j in range(1, len(lis)):
        cnt[ctr][lis[j]] += 1
for ctr in range(n):
    f[ctr][h] = cnt[ctr][h]
    if f[ctr][h] > g[h]:
        g[h] = f[ctr][h]
for j in range(h - 1, -1, -1):
    for i in range(n):
        tmp = 0
        if j + hl <= h:
            if g[j + hl] > tmp: 
                tmp = g[j + hl]
        if f[i][j + 1] > tmp: 
            tmp = f[i][j + 1]
        f[i][j] = tmp + cnt[i][j]
        if f[i][j] > g[j]:
            g[j] = f[i][j]
ans = 0
for ctr in range(n):
    ans = max(ans, f[ctr][0])
print(ans)

C++ Solution

#include<iostream>
using namespace std;

const int MAXN = 1900, MAXH = 1900;

int f[MAXN][MAXH + 1], cnt[MAXN][MAXH + 1], g[MAXH + 1];

int main()
{
	int n, h, hl;
	cin >> n >> h >> hl;
	for (int i = 0; i < n; i++)
	{
		int num;
		cin >> num;
		for (int j = 0; j < num; j++)
		{
			int tmp;
			cin >> tmp;
			cnt[i][tmp]++;
		}
	}
	for (int i = 0; i < n; i++)
	{
		f[i][h] = cnt[i][h];
		if (f[i][h] > g[h])
			g[h] = f[i][h];
	}
	for (int j = h - 1; j >= 0; j--)
	{
		for (int i = 0; i < n; i++)
		{
			int tmp = 0;
			if (j + hl <= h)
			{
				if (g[j + hl] > tmp) tmp = g[j + hl];
			}
			if (f[i][j + 1] > tmp) tmp = f[i][j + 1];
			f[i][j] = tmp + cnt[i][j];
			if (f[i][j] > g[j])
				g[j] = f[i][j];
		}
	}
	int ans = 0;
	for (int i = 0; i < n; i++)
		if (f[i][0] > ans)
			ans = f[i][0];
	cout << ans << endl;
	return 0;
}