题解 | #小红结账#

按照题意模拟即可，需要注意的是 a/b 向上取整可以直接写为 (a+b-1)/b

#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N = 2e5 + 5;
int __t = 1, n, m, k, c;
void solve() {
    map<int, int> mp;
    cin >> n >> m;
    for (int i = 0; i < n; ++i) {
        cin >> k >> c;
        vector<int> ve(k - 1);
        for (int j = 0; j < k - 1; ++j)
            cin >> ve[j];
        int pos = (c + k - 1) / k;
        for (int j : ve)
            mp[j] += pos;
    }
    for (int i = 1; i <= m; ++i)
        cout << mp[i] << " \n"[i == m];
}
int32_t main() {
#ifdef ONLINE_JUDGE
    ios::sync_with_stdio(false);
    cin.tie(0);
#endif
    // cin >> __t;
    while (__t--)
        solve();
    return 0;
}