Submission #1199851

#	Time	Username	Problem	Language	Result	Execution time	Memory
1199851		ofoz	Curtains (NOI23_curtains)	C++20	0 / 100	0 ms	396 KiB

curtains

#include <bits/stdc++.h>
#define int long long
using namespace std;
#define pi pair<int, int>
void solve() {
    int n, m;
    cin >> n >> m;
    vector<vector<int>> grid(n, vector<int>(m));
    vector<vector<int>> gain(n, vector<int>(m));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            cin >> grid[i][j];
        }
    }

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            cin >> gain[i][j];
        }
    }
    
    vector<priority_queue<pi>> ptrs(m);
    for (int i = 0; i < n; i++) {
        ptrs[0].push({-grid[i][0], i});
    }

    vector<int> cur(m, 0);
    int res = 0;
    vector<int> finished;
    bool start = true;
    while (start || !finished.empty()) {
        start = false;
        for (int i : finished) {
            res++;

            for (int j = 0; j < m; j++) { cur[j] += gain[i][j]; }

        }
        finished.clear();

        for (int k = 0; k < m; k++) {
            
            while (!ptrs[k].empty() && -(ptrs[k].top()).first <= cur[k]) {
                int x, i;
                tie(x, i) = ptrs[k].top();
                x = -x;
                if (k == m-1) { finished.push_back(i); }
                else ptrs[k+1].push({-grid[i][k+1], i});
                ptrs[k].pop();
            }
        }
    }

    cout << res << endl;
}

signed main() {
    solve();
    return 0;
}

• Subtask 1: 0 / 3
• Subtask 2: 0 / 6
• Subtask 3: 0 / 15
• Subtask 4: 0 / 20
• Subtask 5: 0 / 36
• Subtask 6: 0 / 20