Submission #1102747

#	Time	Username	Problem	Language	Result	Execution time	Memory
1102747		ttamx	Topical (NOI23_topical)	C++17	100 / 100	576 ms	132528 KiB

Main

#include<bits/stdc++.h>

using namespace std;

using ll = long long;

int main(){
    cin.tie(nullptr)->sync_with_stdio(false);
    int n,m;
    cin >> n >> m;
    vector<vector<ll>> a(n,vector<ll>(m)),b(n,vector<ll>(m));
    for(auto &v:a)for(auto &x:v)cin >> x;
    for(auto &v:b)for(auto &x:v)cin >> x;
    queue<int> q;
    vector<int> cnt(n);
    vector<ll> val(m);
    vector<priority_queue<pair<ll,int>,vector<pair<ll,int>>,greater<pair<ll,int>>>> pq(m);
    for(int i=0;i<n;i++)for(int j=0;j<m;j++)pq[j].emplace(a[i][j],i);
    auto work=[&](){
        for(int i=0;i<m;i++){
            while(!pq[i].empty()&&pq[i].top().first<=val[i]){
                int v=pq[i].top().second;
                pq[i].pop();
                cnt[v]++;
                if(cnt[v]==m)q.emplace(v);
            }
        }
    };
    work();
    int ans=0;
    while(!q.empty()){
        int u=q.front();
        q.pop();
        ans++;
        for(int i=0;i<m;i++)val[i]+=b[u][i];
        work();
    }
    cout << ans << "\n";
}

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