oj.uz

답안 #850207

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
850207 2023-09-16T04:36:37 Z eltu0815 봉쇄 시간 (IOI23_closing) C++17
35 / 100
 1000 ms 32888 KB 
#include "closing.h"

#include <bits/stdc++.h>
#define MAX 200005
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

int visited[MAX], parent[MAX];
vector<pii> graph[MAX];

ll tmp[MAX];
ll cost1[MAX], cost2[MAX];
ll dist1[MAX], dist2[MAX];

void init(int node, int par) {
    parent[node] = par;
    for(auto [v, w] : graph[node]) if(v != par) init(v, node);
}

void dfs(int node, int par, ll dist[]) {
    for(auto [v, w] : graph[node]) if(v != par) {
        dist[v] = dist[node] + w;
        dfs(v, node, dist);
    }
}

ll c[MAX];
vector<int> path;

int max_score(int N, int X, int Y, long long K, vector<int> U, vector<int> V, vector<int> W)
{
    path.clear();
    for(int i = 0; i < N; ++i) graph[i].clear();
    for(int i = 0; i < N; ++i) dist1[i] = dist2[i] = visited[i] = c[i] = 0;
    for(int i = 0; i < N - 1; ++i) {
        graph[U[i]].push_back({V[i], W[i]});
        graph[V[i]].push_back({U[i], W[i]});
    }
    
    init(0, -1);
    dfs(X, -1, dist1);
    dfs(Y, -1, dist2);
    int node = X;
    while(node != -1) visited[node]++, node = parent[node];
    
    node = Y; int flag = 0;
    while(node != -1) {
        if(visited[node] == 1 && !flag) flag = 1;
        else if(flag) visited[node]--;
        else visited[node]++;
        node = parent[node];
    }
    
    node = X;
    while(node != -1 && visited[node]) {
        path.push_back(node);
        node = parent[node];
    }
    path.pop_back();
    
    vector<int> path2;
    node = Y;
    while(node != -1 && visited[node]) {
        path2.push_back(node);
        node = parent[node];
    }
    reverse(path2.begin(), path2.end());
    for(auto v : path2) path.push_back(v);
    
    priority_queue<pair<ll, int> > pq;
    for(int i = 1; i <= 2 * N; ++i) cost1[i] = (ll)(2e18);
    int p = 0, q = path.size() - 1;
    for(int i = 1; i <= 2 * N; ++i) {
        if(p == path.size() && q == -1) break;
        if(p == path.size()) {
            cost1[i] = cost1[i - 1] + dist2[path[q]] - c[path[q]];
            c[path[q]] = dist2[path[q]]; --q;
        }
        else if(q == -1) {
            cost1[i] = cost1[i - 1] + dist1[path[p]] - c[path[p]];
            c[path[p]] = dist1[path[p]]; ++p;
        }
        else if(dist1[path[p]] - c[path[p]] <= dist2[path[q]] - c[path[q]]) {
            cost1[i] = cost1[i - 1] + dist1[path[p]] - c[path[p]];
            c[path[p]] = dist1[path[p]]; ++p;
        }
        else {
            cost1[i] = cost1[i - 1] + dist2[path[q]] - c[path[q]];
            c[path[q]] = dist2[path[q]]; --q;
        }
    }
    
    for(int i = 1; i <= 2 * N; ++i) cost2[i] = (ll)(2e18);
    for(int i = 0; i < N; ++i) {
        if(visited[i]) continue;
        for(int j = 0; j <= 2 * N; ++j) tmp[j] = cost2[j];
        for(int j = 1; j <= 2 * N; ++j) {
            tmp[j] = min(tmp[j], cost2[j - 1] + min(dist1[i], dist2[i]));
            if(j >= 2) tmp[j] = min(tmp[j], cost2[j - 2] + max(dist1[i], dist2[i]));
        }
        for(int j = 0; j <= 2 * N; ++j) cost2[j] = tmp[j];
    }
    
    int mx = 0;
    for(int i = 2 * N, p = 0; i >= 0; --i) {
        while(p < 2 * N && cost1[i] + cost2[p + 1] <= K) ++p;
        if(cost1[i] + cost2[p] <= K) mx = max(mx, i + p);
    }
    return mx;
}

Compilation message

closing.cpp: In function 'int max_score(int, int, int, long long int, std::vector<int>, std::vector<int>, std::vector<int>)':
closing.cpp:76:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |         if(p == path.size() && q == -1) break;
      |            ~~^~~~~~~~~~~~~~
closing.cpp:77:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |         if(p == path.size()) {
      |            ~~^~~~~~~~~~~~~~

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14684 KB Output is correct

Subtask #1
0.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1052 ms 32888 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 14684 KB Output is correct
2 Correct 2 ms 14684 KB Output is correct
3 Correct 2 ms 14936 KB Output is correct
4 Correct 2 ms 12756 KB Output is correct
5 Correct 2 ms 14680 KB Output is correct
6 Correct 2 ms 14684 KB Output is correct
7 Correct 2 ms 14684 KB Output is correct
8 Correct 2 ms 14680 KB Output is correct
9 Correct 2 ms 14784 KB Output is correct
10 Correct 2 ms 12636 KB Output is correct
11 Correct 2 ms 12632 KB Output is correct

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 14684 KB Output is correct
2 Correct 2 ms 14684 KB Output is correct
3 Correct 2 ms 14936 KB Output is correct
4 Correct 2 ms 12756 KB Output is correct
5 Correct 2 ms 14680 KB Output is correct
6 Correct 2 ms 14684 KB Output is correct
7 Correct 2 ms 14684 KB Output is correct
8 Correct 2 ms 14680 KB Output is correct
9 Correct 2 ms 14784 KB Output is correct
10 Correct 2 ms 12636 KB Output is correct
11 Correct 2 ms 12632 KB Output is correct
12 Correct 2 ms 14684 KB Output is correct
13 Correct 2 ms 14680 KB Output is correct
14 Correct 2 ms 14684 KB Output is correct
15 Correct 2 ms 14684 KB Output is correct
16 Correct 2 ms 12732 KB Output is correct
17 Correct 2 ms 12636 KB Output is correct
18 Correct 2 ms 14684 KB Output is correct
19 Correct 3 ms 14684 KB Output is correct
20 Correct 3 ms 14684 KB Output is correct
21 Correct 3 ms 14684 KB Output is correct
22 Correct 3 ms 14684 KB Output is correct
23 Correct 2 ms 12780 KB Output is correct
24 Correct 2 ms 12636 KB Output is correct

Subtask #4
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 14684 KB Output is correct
2 Correct 2 ms 14684 KB Output is correct
3 Correct 2 ms 14936 KB Output is correct
4 Correct 2 ms 12756 KB Output is correct
5 Correct 2 ms 14680 KB Output is correct
6 Correct 2 ms 14684 KB Output is correct
7 Correct 2 ms 14684 KB Output is correct
8 Correct 2 ms 14680 KB Output is correct
9 Correct 2 ms 14784 KB Output is correct
10 Correct 2 ms 12636 KB Output is correct
11 Correct 2 ms 12632 KB Output is correct
12 Correct 2 ms 14684 KB Output is correct
13 Correct 2 ms 14680 KB Output is correct
14 Correct 2 ms 14684 KB Output is correct
15 Correct 2 ms 14684 KB Output is correct
16 Correct 2 ms 12732 KB Output is correct
17 Correct 2 ms 12636 KB Output is correct
18 Correct 2 ms 14684 KB Output is correct
19 Correct 3 ms 14684 KB Output is correct
20 Correct 3 ms 14684 KB Output is correct
21 Correct 3 ms 14684 KB Output is correct
22 Correct 3 ms 14684 KB Output is correct
23 Correct 2 ms 12780 KB Output is correct
24 Correct 2 ms 12636 KB Output is correct
25 Correct 3 ms 14680 KB Output is correct
26 Correct 32 ms 14940 KB Output is correct
27 Correct 30 ms 15188 KB Output is correct
28 Correct 3 ms 15196 KB Output is correct
29 Correct 13 ms 15176 KB Output is correct
30 Correct 24 ms 14940 KB Output is correct
31 Correct 3 ms 13148 KB Output is correct
32 Correct 3 ms 13148 KB Output is correct

Subtask #5
0.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14684 KB Output is correct
2 Correct 3 ms 14684 KB Output is correct
3 Correct 2 ms 14684 KB Output is correct
4 Correct 2 ms 14936 KB Output is correct
5 Correct 2 ms 12756 KB Output is correct
6 Correct 2 ms 14680 KB Output is correct
7 Correct 2 ms 14684 KB Output is correct
8 Correct 2 ms 14684 KB Output is correct
9 Correct 2 ms 14684 KB Output is correct
10 Correct 2 ms 14684 KB Output is correct
11 Correct 2 ms 14800 KB Output is correct
12 Correct 2 ms 14684 KB Output is correct
13 Correct 2 ms 14684 KB Output is correct
14 Correct 2 ms 14684 KB Output is correct
15 Incorrect 2 ms 14692 KB 1st lines differ - on the 1st token, expected: '11', found: '12'
16 Halted 0 ms 0 KB -

Subtask #6
0.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14684 KB Output is correct
2 Correct 3 ms 14684 KB Output is correct
3 Correct 2 ms 14684 KB Output is correct
4 Correct 2 ms 14936 KB Output is correct
5 Correct 2 ms 12756 KB Output is correct
6 Correct 2 ms 14680 KB Output is correct
7 Correct 2 ms 14684 KB Output is correct
8 Correct 2 ms 14684 KB Output is correct
9 Correct 2 ms 14680 KB Output is correct
10 Correct 2 ms 14784 KB Output is correct
11 Correct 2 ms 12636 KB Output is correct
12 Correct 2 ms 12632 KB Output is correct
13 Correct 2 ms 14684 KB Output is correct
14 Correct 2 ms 14680 KB Output is correct
15 Correct 2 ms 14684 KB Output is correct
16 Correct 2 ms 14684 KB Output is correct
17 Correct 2 ms 12732 KB Output is correct
18 Correct 2 ms 12636 KB Output is correct
19 Correct 2 ms 14684 KB Output is correct
20 Correct 2 ms 14684 KB Output is correct
21 Correct 2 ms 14684 KB Output is correct
22 Correct 2 ms 14684 KB Output is correct
23 Correct 2 ms 14800 KB Output is correct
24 Correct 2 ms 14684 KB Output is correct
25 Correct 2 ms 14684 KB Output is correct
26 Correct 2 ms 14684 KB Output is correct
27 Incorrect 2 ms 14692 KB 1st lines differ - on the 1st token, expected: '11', found: '12'
28 Halted 0 ms 0 KB -

Subtask #7
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14684 KB Output is correct
2 Correct 3 ms 14684 KB Output is correct
3 Correct 2 ms 14684 KB Output is correct
4 Correct 2 ms 14936 KB Output is correct
5 Correct 2 ms 12756 KB Output is correct
6 Correct 2 ms 14680 KB Output is correct
7 Correct 2 ms 14684 KB Output is correct
8 Correct 2 ms 14684 KB Output is correct
9 Correct 2 ms 14680 KB Output is correct
10 Correct 2 ms 14784 KB Output is correct
11 Correct 2 ms 12636 KB Output is correct
12 Correct 2 ms 12632 KB Output is correct
13 Correct 2 ms 14684 KB Output is correct
14 Correct 2 ms 14680 KB Output is correct
15 Correct 2 ms 14684 KB Output is correct
16 Correct 2 ms 14684 KB Output is correct
17 Correct 2 ms 12732 KB Output is correct
18 Correct 2 ms 12636 KB Output is correct
19 Correct 2 ms 14684 KB Output is correct
20 Correct 3 ms 14684 KB Output is correct
21 Correct 3 ms 14684 KB Output is correct
22 Correct 3 ms 14684 KB Output is correct
23 Correct 3 ms 14684 KB Output is correct
24 Correct 2 ms 12780 KB Output is correct
25 Correct 2 ms 12636 KB Output is correct
26 Correct 2 ms 14684 KB Output is correct
27 Correct 2 ms 14684 KB Output is correct
28 Correct 2 ms 14684 KB Output is correct
29 Correct 2 ms 14684 KB Output is correct
30 Correct 2 ms 14800 KB Output is correct
31 Correct 2 ms 14684 KB Output is correct
32 Correct 2 ms 14684 KB Output is correct
33 Correct 2 ms 14684 KB Output is correct
34 Incorrect 2 ms 14692 KB 1st lines differ - on the 1st token, expected: '11', found: '12'
35 Halted 0 ms 0 KB -

Subtask #8
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14684 KB Output is correct
2 Correct 3 ms 14684 KB Output is correct
3 Correct 2 ms 14684 KB Output is correct
4 Correct 2 ms 14936 KB Output is correct
5 Correct 2 ms 12756 KB Output is correct
6 Correct 2 ms 14680 KB Output is correct
7 Correct 2 ms 14684 KB Output is correct
8 Correct 2 ms 14684 KB Output is correct
9 Correct 2 ms 14680 KB Output is correct
10 Correct 2 ms 14784 KB Output is correct
11 Correct 2 ms 12636 KB Output is correct
12 Correct 2 ms 12632 KB Output is correct
13 Correct 2 ms 14684 KB Output is correct
14 Correct 2 ms 14680 KB Output is correct
15 Correct 2 ms 14684 KB Output is correct
16 Correct 2 ms 14684 KB Output is correct
17 Correct 2 ms 12732 KB Output is correct
18 Correct 2 ms 12636 KB Output is correct
19 Correct 2 ms 14684 KB Output is correct
20 Correct 3 ms 14684 KB Output is correct
21 Correct 3 ms 14684 KB Output is correct
22 Correct 3 ms 14684 KB Output is correct
23 Correct 3 ms 14684 KB Output is correct
24 Correct 2 ms 12780 KB Output is correct
25 Correct 2 ms 12636 KB Output is correct
26 Correct 3 ms 14680 KB Output is correct
27 Correct 32 ms 14940 KB Output is correct
28 Correct 30 ms 15188 KB Output is correct
29 Correct 3 ms 15196 KB Output is correct
30 Correct 13 ms 15176 KB Output is correct
31 Correct 24 ms 14940 KB Output is correct
32 Correct 3 ms 13148 KB Output is correct
33 Correct 3 ms 13148 KB Output is correct
34 Correct 2 ms 14684 KB Output is correct
35 Correct 2 ms 14684 KB Output is correct
36 Correct 2 ms 14684 KB Output is correct
37 Correct 2 ms 14684 KB Output is correct
38 Correct 2 ms 14800 KB Output is correct
39 Correct 2 ms 14684 KB Output is correct
40 Correct 2 ms 14684 KB Output is correct
41 Correct 2 ms 14684 KB Output is correct
42 Incorrect 2 ms 14692 KB 1st lines differ - on the 1st token, expected: '11', found: '12'
43 Halted 0 ms 0 KB -

Subtask #9
0.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 14684 KB Output is correct
2 Correct 3 ms 14684 KB Output is correct
3 Correct 2 ms 14684 KB Output is correct
4 Correct 2 ms 14936 KB Output is correct
5 Correct 2 ms 12756 KB Output is correct
6 Correct 2 ms 14680 KB Output is correct
7 Correct 2 ms 14684 KB Output is correct
8 Correct 2 ms 14684 KB Output is correct
9 Correct 2 ms 14680 KB Output is correct
10 Correct 2 ms 14784 KB Output is correct
11 Correct 2 ms 12636 KB Output is correct
12 Correct 2 ms 12632 KB Output is correct
13 Correct 2 ms 14684 KB Output is correct
14 Correct 2 ms 14680 KB Output is correct
15 Correct 2 ms 14684 KB Output is correct
16 Correct 2 ms 14684 KB Output is correct
17 Correct 2 ms 12732 KB Output is correct
18 Correct 2 ms 12636 KB Output is correct
19 Correct 2 ms 14684 KB Output is correct
20 Correct 3 ms 14684 KB Output is correct
21 Correct 3 ms 14684 KB Output is correct
22 Correct 3 ms 14684 KB Output is correct
23 Correct 3 ms 14684 KB Output is correct
24 Correct 2 ms 12780 KB Output is correct
25 Correct 2 ms 12636 KB Output is correct
26 Correct 3 ms 14680 KB Output is correct
27 Correct 32 ms 14940 KB Output is correct
28 Correct 30 ms 15188 KB Output is correct
29 Correct 3 ms 15196 KB Output is correct
30 Correct 13 ms 15176 KB Output is correct
31 Correct 24 ms 14940 KB Output is correct
32 Correct 3 ms 13148 KB Output is correct
33 Correct 3 ms 13148 KB Output is correct
34 Correct 2 ms 14684 KB Output is correct
35 Correct 2 ms 14684 KB Output is correct
36 Correct 2 ms 14684 KB Output is correct
37 Correct 2 ms 14684 KB Output is correct
38 Correct 2 ms 14800 KB Output is correct
39 Correct 2 ms 14684 KB Output is correct
40 Correct 2 ms 14684 KB Output is correct
41 Correct 2 ms 14684 KB Output is correct
42 Incorrect 2 ms 14692 KB 1st lines differ - on the 1st token, expected: '11', found: '12'
43 Halted 0 ms 0 KB -