Submission #1287354

#	Time	Username	Problem	Language	Result	Execution time	Memory
1287354		hehehe147	Topical (NOI23_topical)	C++20	12 / 100	166 ms	78728 KiB

Main

#include <bits/stdc++.h>

using namespace std;
using ll = long long;
const int MAXN = 1e6 + 7;

int n, k;
vector<vector<int>> r, u;

void read() {
    cin >> n >> k;
    r = u = vector<vector<int>>(n + 1, vector<int>(k + 1));
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= k; j++) {
            cin >> r[i][j];
        }
    }

    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= k; j++) {
            cin >> u[i][j];
        }
    }
}

int p[MAXN], cnt[MAXN];
vector<pair<int, int>> tp[MAXN];
int pt[MAXN];

void addM(int i) {
    for (int j = 1; j <= k; j++) {
        p[j] += u[i][j];
    }
}

bool hehe() {   
    bool flag = false;
    for (int i = 1; i <= k; i++) {
        while (pt[i] < tp[i].size() && p[i] >= tp[i][pt[i]].first) {
            int idx = tp[i][pt[i]].second;
            cnt[idx]++;
            if (cnt[idx] == k) {
                addM(idx);
                flag = true;
            }
            pt[i]++;
        }
    }
    return flag;
}

void solve() {
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= k; j++) {
            tp[j].push_back({r[i][j], i});
        }
    }

    for (int i = 1; i <= k; i++) {
        sort(tp[i].begin(), tp[i].end());
    }

    // for (int i = 1; i <= k; i++) {
    //     cout << i << ": \n";
    //     for (auto [x, id] : tp[i]) {
    //         cout << x << " " << id << "\n";
    //     }
    // }

    while (hehe());
    int ans = 0;
    for (int i = 1; i <= n; i++) {
        ans += (cnt[i] == k);
    }
    cout << ans << "\n";
}

int main() {
	ios_base::sync_with_stdio(false);
    cin.tie(0);

    if (fopen("topic.inp", "r")) {
        freopen("topic.inp", "r", stdin);
        freopen("topic.out", "w", stdout);
    }

    read();
    solve();
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:83:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   83 |         freopen("topic.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:84:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   84 |         freopen("topic.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 0 / 28
• Subtask 3: 0 / 21
• Subtask 4: 0 / 39