oj.uz

답안 #1064175

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1064175 2024-08-18T09:56:20 Z parsadox2 봉쇄 시간 (IOI23_closing) C++17
21 / 100
 1000 ms 28752 KB 
#include "closing.h"
#include <bits/stdc++.h>
#define F first
#define S second
using namespace std;
const int N = 2e5 + 10;
int n , x , y;
long long dis[2][N] , k , psum[2][N];
vector <pair<int , int>> adj[N];

void Dfs(int v , int ty , int p = -1)
{
    for(auto u : adj[v])  if(u.F != p)
    {
        dis[ty][u.F] = dis[ty][v] + u.S;
        Dfs(u.F , ty , v);
    }
}

bool cmp(int aa , int bb)
{
    return min(dis[0][aa] , dis[1][aa]) < min(dis[0][bb] , dis[1][bb]);
}

long long Get(int l , int r , int ty)
{
    long long res = psum[ty][r];
    if(l > 0)
        res -= psum[ty][l - 1];
    return res;
}

int Solve(int l , int r)
{
    long long val = 0;
    int ans = 0;
    for(int i = l ; i <= r ; i++)
    {
        val += max(dis[0][i] , dis[1][i]);
        ans += 2;
    }
    for(int i = x ; i < l ; i++)
    {
        ans++;
        val += dis[0][i];
    }
    for(int i = r + 1 ; i <= y ; i++)
    {
        ans++;
        val += dis[1][i];
    }
    if(val > k)
        return 0;
    int px = min(l , x) - 1 , py = max(r , y) + 1;
    while(px != -1 && py != n)
    {
        if(dis[0][px] <= dis[1][py])
        {
            if(val + dis[0][px] > k)
                break;
            ans++;
            val+= dis[0][px];
            px--;
            continue;
        }
        if(val + dis[1][py] > k)
            break;
        ans++;
        val += dis[1][py];
        py++;
    }
    while(py != n && val + dis[1][py] <= k)
    {
        val += dis[1][py];
        py++;
        ans++;
    }
    while(px != -1 && val + dis[0][px] <= k)
    {
        val += dis[0][px];
        px--;
        ans++;
    }
    return ans;
}

int max_score(int nn, int X, int Y, long long K,
              vector<int> U, vector<int> V, vector<int> W)
{
    n = nn;
    x = X;
    y = Y;
    k = K;
    if(x > y)
        swap(x , y);
    for(int i = 0 ; i < n ; i++)
        adj[i].clear();
    for(int i = 0 ; i < n - 1 ; i++)
    {
        adj[U[i]].push_back(make_pair(V[i] , W[i]));
        adj[V[i]].push_back(make_pair(U[i] , W[i]));
    }
    //cout << x << " " << y << endl;
    dis[0][x] = 0;
    Dfs(x , 0);
    dis[1][y] = 0;
    Dfs(y , 1);
    psum[0][0] = dis[0][0];
    psum[1][0] = dis[1][0];
    for(int i = 1 ; i < n ; i++)
    {
        psum[0][i] = dis[0][i] + psum[0][i - 1];
        psum[1][i] = dis[1][i] + psum[1][i - 1];
    }
    int ans = 0;
    for(int l = 0 ; l < n ; l++)  for(int r = l ; r < n ; r++)
    {
        ans = max(ans , Solve(l , r));
    }
    vector <long long> all;
    for(int i = 0 ; i < n ; i++)
    {
        //cout << i << " : " << dis[0][i] << " " << dis[1][i] << endl;
        all.push_back(min(dis[0][i] , dis[1][i]));
    }
    sort(all.rbegin() , all.rend());
    int ans2 = 0;
    while(!all.empty() && k >= all.back())
    {
        k -= all.back();
        all.pop_back();
        ans2++;
    }
    return max(ans , ans2);
}

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 4952 KB 1st lines differ - on the 1st token, expected: '6', found: '5'
2 Halted 0 ms 0 KB -

Subtask #1
0.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1093 ms 28752 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 5008 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 5144 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct

Subtask #3
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 5008 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 5144 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 3 ms 4952 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 3 ms 4956 KB Output is correct
15 Correct 3 ms 4956 KB Output is correct
16 Correct 2 ms 5152 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 39 ms 5212 KB Output is correct
20 Correct 19 ms 5460 KB Output is correct
21 Correct 52 ms 5212 KB Output is correct
22 Correct 26 ms 5208 KB Output is correct
23 Correct 35 ms 5240 KB Output is correct
24 Correct 35 ms 5208 KB Output is correct

Subtask #4
0.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 2 ms 5008 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 5144 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 3 ms 4952 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 3 ms 4956 KB Output is correct
15 Correct 3 ms 4956 KB Output is correct
16 Correct 2 ms 5152 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 39 ms 5212 KB Output is correct
20 Correct 19 ms 5460 KB Output is correct
21 Correct 52 ms 5212 KB Output is correct
22 Correct 26 ms 5208 KB Output is correct
23 Correct 35 ms 5240 KB Output is correct
24 Correct 35 ms 5208 KB Output is correct
25 Correct 7 ms 5212 KB Output is correct
26 Execution timed out 1081 ms 5468 KB Time limit exceeded
27 Halted 0 ms 0 KB -

Subtask #5
0.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 4952 KB 1st lines differ - on the 1st token, expected: '6', found: '5'
2 Halted 0 ms 0 KB -

Subtask #6
0.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 4952 KB 1st lines differ - on the 1st token, expected: '6', found: '5'
2 Halted 0 ms 0 KB -

Subtask #7
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 4952 KB 1st lines differ - on the 1st token, expected: '6', found: '5'
2 Halted 0 ms 0 KB -

Subtask #8
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 4952 KB 1st lines differ - on the 1st token, expected: '6', found: '5'
2 Halted 0 ms 0 KB -

Subtask #9
0.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 4952 KB 1st lines differ - on the 1st token, expected: '6', found: '5'
2 Halted 0 ms 0 KB -