oj.uz

답안 #1006199

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1006199 2024-06-23T14:21:10 Z Unforgettablepl 수확 (JOI20_harvest) C++17
5 / 100
 399 ms 34644 KB 
#include <bits/stdc++.h>
using namespace std;


#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
typedef tree<pair<long long,long long>,null_type,less<>,rb_tree_tag,tree_order_statistics_node_update> orderedset;

#define int long long

const int INF = 1e18;

int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n,m,l,c;
    cin >> n >> m >> l >> c;
    vector<int> employee(n+1);
    vector<int> apple(m);
    vector<pair<int,int>> adj(n+1);
    vector<vector<int>> revadj(n+1);
    for(int i=1;i<=n;i++)cin>>employee[i];
    for(int&i:apple)cin>>i;
    for(int i=1;i<=n;i++){
        int modded = c%l;
        int iter = 0;
        for(int jump=131072;jump;jump/=2){
            if(iter+jump>n)continue;
            if((l+employee[i]-employee[(n-iter-jump+i)%n +1])%l < modded)iter+=jump;
        }
        iter++;
        if(iter==n+1){
            adj[i] = {i,(c/l)*l + l};
            continue;
        }
        adj[i] = {(n-iter+i)%n +1,(c/l)*l + (l+employee[i]-employee[(n-iter+i)%n +1])%l};
        revadj[adj[i].first].emplace_back(i);
    }
    vector<int> depth(n+1);
    vector<bool> visited(n+1);
    vector<int> heads;
    function<void (int)> front_dfs = [&](int x){
        if(visited[x])return;
        visited[x]=true;
        front_dfs(adj[x].first);
        if(depth[adj[x].first]==0)heads.emplace_back(x);
        depth[x] = depth[adj[x].first]+adj[x].second;
    };
    for(int i=1;i<=n;i++)if(!visited[i])front_dfs(i);
    vector<vector<int>> apples(n+1);
    vector<vector<pair<int,int>>> queries(n+1);
    for(int&i:apple){
        int start = -1;
        if(i<employee[1])start = n;
        else {
            start = upper_bound(employee.begin()+1,employee.end(),i)-employee.begin()-1;
        }
        apples[start].emplace_back((l+i-employee[start])%l);
    }
    int q;
    cin >> q;
    vector<int> ans(q+1);
    for(int i=1;i<=q;i++){
        int v,t;
        cin >> v >> t;
        queries[v].emplace_back(t,i);
    }
    visited = vector<bool>(n+1);
    int uid = 0;
    function<orderedset(int)> calc_linear_dfs = [&](int x){
        orderedset curr;
        if(visited[x])return curr;
        visited[x] = true;
        for(int&i:revadj[x]){
            auto t = calc_linear_dfs(i);
            if(curr.size()<t.size())swap(curr,t);
            for(auto j:t)curr.insert(j);
        }
        for(int&i:apples[x])curr.insert({i+depth[x],++uid});
        for(auto[t,idx]:queries[x]){
            ans[idx] = curr.order_of_key({t+depth[x],INF});
        }
        return curr;
    };
    for(int&i:heads){
        auto t = calc_linear_dfs(i);
        orderedset curr;
        for(auto [x,y]:t)curr.insert({x-adj[i].second,y});
        int cycle_len = depth[adj[i].first];
        function<void(int,int)> calc = [&](int x,int len){
            for(auto[t,idx]:queries[x]){
                t-=len;
                if(t<0)continue;
                ans[idx]+=curr.size()*(t/cycle_len);
                t%=cycle_len;
                ans[idx]+=curr.order_of_key({t,INF});
            }
            if(x==i)return;
            calc(adj[x].first,len+adj[x].second);
        };
        calc(adj[i].first,adj[i].second);
    }
    for(int i=1;i<=q;i++)cout<<ans[i]<<'\n';
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 4 ms 1372 KB Output is correct
4 Correct 12 ms 1432 KB Output is correct
5 Correct 125 ms 2064 KB Output is correct
6 Correct 106 ms 2132 KB Output is correct
7 Correct 99 ms 2132 KB Output is correct
8 Correct 4 ms 1112 KB Output is correct
9 Correct 3 ms 1116 KB Output is correct
10 Correct 3 ms 1116 KB Output is correct
11 Correct 3 ms 1116 KB Output is correct
12 Correct 111 ms 2132 KB Output is correct
13 Correct 102 ms 2132 KB Output is correct
14 Correct 48 ms 1616 KB Output is correct
15 Correct 51 ms 1656 KB Output is correct
16 Correct 53 ms 1624 KB Output is correct
17 Correct 50 ms 1620 KB Output is correct
18 Correct 54 ms 1628 KB Output is correct
19 Correct 53 ms 1624 KB Output is correct
20 Correct 54 ms 1628 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 74 ms 8908 KB Output is correct
2 Incorrect 399 ms 34644 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 2 ms 860 KB Output is correct
3 Correct 4 ms 1372 KB Output is correct
4 Correct 12 ms 1432 KB Output is correct
5 Correct 125 ms 2064 KB Output is correct
6 Correct 106 ms 2132 KB Output is correct
7 Correct 99 ms 2132 KB Output is correct
8 Correct 4 ms 1112 KB Output is correct
9 Correct 3 ms 1116 KB Output is correct
10 Correct 3 ms 1116 KB Output is correct
11 Correct 3 ms 1116 KB Output is correct
12 Correct 111 ms 2132 KB Output is correct
13 Correct 102 ms 2132 KB Output is correct
14 Correct 48 ms 1616 KB Output is correct
15 Correct 51 ms 1656 KB Output is correct
16 Correct 53 ms 1624 KB Output is correct
17 Correct 50 ms 1620 KB Output is correct
18 Correct 54 ms 1628 KB Output is correct
19 Correct 53 ms 1624 KB Output is correct
20 Correct 54 ms 1628 KB Output is correct
21 Correct 74 ms 8908 KB Output is correct
22 Incorrect 399 ms 34644 KB Output isn't correct
23 Halted 0 ms 0 KB -