oj.uz

답안 #840278

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
840278 2023-08-31T09:22:55 Z mohammad_kilani 봉쇄 시간 (IOI23_closing) C++17
37 / 100
 144 ms 43408 KB 
#include "closing.h"
#include <vector>
#include <bits/stdc++.h>
using namespace std;

int n , x , y;

long long k;
const int N = 200010;

vector< pair< int , int > > g[N];

long long a[N] , b[N];

void DFS(int node,int prnt,long long *a,long long dist){
    a[node] = dist;
    for(int i = 0 ;i < (int)g[node].size();i++){
        if(g[node][i].first != prnt)
            DFS(g[node][i].first , node , a , dist + g[node][i].second);
    }
}

vector< bool > onpath;

bool DFS(int node,int prnt){
    onpath[node] = true;
    if(node == y)
    return true;
    for(int i = 0 ;i < (int)g[node].size();i++){
        if(g[node][i].first == prnt) continue;
        if(DFS(g[node][i].first , node))
        return true;
    }
    onpath[node] = false;
    return false;
}

long long seg[4 * N];

int seg2[4 * N];

void update(int s,int e,int idx,int Idx,long long val,int val2){
    if(s > Idx || e < Idx)
        return;
    if(s == e){
       seg[idx] = val;
        seg2[idx] = val2;
        return;
    }
    update(s, ((s+e) >> 1) , (idx << 1) , Idx , val , val2);
    update(((s+e) >> 1) + 1,e,(idx << 1) + 1 , Idx , val , val2);
    seg[idx] = seg[(idx << 1)] + seg[(idx << 1) + 1];
    seg2[idx] = seg2[(idx << 1)] + seg2[(idx << 1) + 1];
}

int get(int s,int e,int idx,long long can){
    if(can >= seg[idx])
        return seg2[idx];
    if(s == e)
        return 0;
    if(can >= seg[(idx << 1)])
        return get(((s+e) >> 1) + 1,e,(idx << 1) + 1, can - seg[(idx << 1)]) + seg2[(idx << 1)];
    return get(s, ((s+e) >> 1),(idx << 1), can);
}

int max_score(int N, int X, int Y, long long K,std::vector<int> U, std::vector<int> V, std::vector<int> W)
{   
    n = N, x = X , y = Y , k = K;
    for(int i = 0;i < n;i++) g[i].clear();
    onpath = vector< bool > (n , 0);
    for(int i = 0 ;i < 4 * n;i++) seg[i] = 0;
    for(int i = 0 ;i < (int)U.size();i++){
        g[U[i]].push_back(make_pair(V[i] , W[i]));
        g[V[i]].push_back(make_pair(U[i] , W[i]));
    }
    DFS(X , -1 , a , 0);
    DFS(Y, - 1, b , 0);
    vector< long long > v;
    for(int i = 0 ;i < n;i++){
        if(a[i] > b[i]) swap(a[i] , b[i]);
        v.push_back(a[i]);
    }
    sort(v.begin(),v.end());
    int ans = 0;
    long long cur = 0;
    while(ans < (int)v.size() && v[ans] + cur <= k) cur += v[ans++];

    cur = 0;
    DFS(X , -1);

    vector< pair< long long , long long > > v2;
    vector< pair< long long , pair< long long , int > > > v3;

    priority_queue < long long > q1;

    int has = 0;
    for(int i = 0 ;i < n;i++){
        if(onpath[i]){
            cur += a[i];
            q1.push(a[i] - b[i]);
            has++;
        }
        else{
            //cout << i << " " << a[i] << " " << b[i] << " ready for two with " << b[i] << endl;
            v2.push_back(make_pair(b[i] , a[i]));
        }
    }
    if(cur > k) return ans;
    sort(v2.begin(),v2.end());
    for(int i = 0 ;i < (int)v2.size();i++){
        v3.push_back(make_pair(v2[i].second , make_pair(v2[i].first , i)));
    }
    sort(v3.begin(),v3.end());
    reverse(v3.begin(),v3.end());

    for(int i = 0 ;i < (int)v3.size();i++){
        update(0 , n - 1 , 1, v3[i].second.second , v3[i].second.first , 1);
    }

    ans = max(ans , has + get(0 , n - 1 , 1 ,k - cur) * 2);

    //cout << has << " " << get(0 , n - 1 , 1 ,k - cur) << " " << cur << endl;

    while((int)v3.size() > 0 || (int)q1.size() > 0){
        if(cur > k) break;
        if((int)v3.size() == 0 || (((int)q1.size() > 0) && (-q1.top() < v3.back().first))){
            cur -= q1.top();
            q1.pop();
            has++;
        }
        else{
            cur += v3.back().first;
            has++;
            q1.push(v3.back().first - v3.back().second.first);
            update(0 , n - 1 , 1 , v3.back().second.second , 0 , 0);
            v3.pop_back();
        }
        if(cur > k) break;
       // cout << has << " " << get(0 , n - 1 , 1 ,k - cur) << endl;
        ans = max(ans , has + get(0 , n - 1 , 1 ,k - cur) * 2);
    }
    return ans;
}

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 113 ms 39608 KB Output is correct
2 Correct 144 ms 43408 KB Output is correct
3 Correct 62 ms 7648 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4964 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct

Subtask #3
0.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4964 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4952 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Incorrect 2 ms 4948 KB 3rd lines differ - on the 1st token, expected: '32', found: '40'
19 Halted 0 ms 0 KB -

Subtask #4
0.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4964 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4952 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Incorrect 2 ms 4948 KB 3rd lines differ - on the 1st token, expected: '32', found: '40'
19 Halted 0 ms 0 KB -

Subtask #5
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4992 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 3 ms 4968 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 2 ms 4996 KB Output is correct
22 Correct 2 ms 4948 KB Output is correct
23 Correct 2 ms 4948 KB Output is correct
24 Correct 2 ms 4948 KB Output is correct

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4964 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4952 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 2 ms 4948 KB Output is correct
22 Correct 2 ms 4948 KB Output is correct
23 Correct 2 ms 4948 KB Output is correct
24 Correct 2 ms 4948 KB Output is correct
25 Correct 2 ms 4992 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 2 ms 4948 KB Output is correct
28 Correct 2 ms 4948 KB Output is correct
29 Correct 3 ms 4968 KB Output is correct
30 Correct 2 ms 4948 KB Output is correct
31 Correct 2 ms 4948 KB Output is correct
32 Correct 2 ms 4948 KB Output is correct
33 Correct 2 ms 4996 KB Output is correct
34 Correct 2 ms 4948 KB Output is correct
35 Correct 2 ms 4948 KB Output is correct
36 Correct 2 ms 4948 KB Output is correct
37 Correct 2 ms 4948 KB Output is correct
38 Correct 2 ms 4948 KB Output is correct
39 Correct 2 ms 4948 KB Output is correct
40 Correct 2 ms 4948 KB Output is correct
41 Correct 2 ms 4948 KB Output is correct
42 Correct 2 ms 4948 KB Output is correct
43 Correct 2 ms 4948 KB Output is correct
44 Correct 2 ms 4948 KB Output is correct
45 Correct 2 ms 4948 KB Output is correct
46 Correct 2 ms 4948 KB Output is correct
47 Correct 2 ms 4948 KB Output is correct
48 Correct 2 ms 4948 KB Output is correct
49 Correct 2 ms 4948 KB Output is correct
50 Correct 2 ms 4948 KB Output is correct

Subtask #7
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4964 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4952 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Incorrect 2 ms 4948 KB 3rd lines differ - on the 1st token, expected: '32', found: '40'
20 Halted 0 ms 0 KB -

Subtask #8
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4964 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4952 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Incorrect 2 ms 4948 KB 3rd lines differ - on the 1st token, expected: '32', found: '40'
20 Halted 0 ms 0 KB -

Subtask #9
0.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4964 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4952 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Incorrect 2 ms 4948 KB 3rd lines differ - on the 1st token, expected: '32', found: '40'
20 Halted 0 ms 0 KB -