oj.uz

답안 #840787

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
840787 2023-08-31T17:05:16 Z MohamedAliSaidane 봉쇄 시간 (IOI23_closing) C++17
9 / 100
 187 ms 542540 KB 
#include "closing.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

#define pb push_back
#define ff first
#define ss second
#define all(x) (x).begin(),(x).end()

const int nax = 205;
const ll INF = 1e18 + 5;

int n, x, y;
ll k;
vector<pair<int,ll>> A[nax];
vector<int> adj[nax];
ll dx[nax], dy[nax];
ll dp[nax][2 * nax][4], memo[nax][2 * nax][4][nax];
int tx[nax], ty[nax];

void dfsx(int u, int par)
{
    for(auto e: A[u])
    {
        if(e.ff == par)
            continue;
        dx[e.ff] = dx[u] + e.ss;
        tx[e.ff] = u;
        dfsx(e.ff, u);
    }
}
void dfsy(int u, int par)
{
    for(auto e: A[u])
    {
        if(e.ff == par)
            continue;
        dy[e.ff] = dy[u] + e.ss;
        ty[e.ff] = u;
        dfsy(e.ff, u);
    }
}
ll f(int u, int ans, int typ);

ll g(int u, int rem, int typ, int idx)
{
    if(rem < 0)
        return INF;
    if(idx == (int)(adj[u].size()))
        return rem > 0? INF: 0ll;
    if(memo[u][rem][typ][idx] != -1)
        return memo[u][rem][typ][idx];
    if(rem == 0)
        return memo[u][rem][typ][idx] = 0ll;
    ll rep = INF;
    for(int j = 0; j <= rem; j++)
    {
        if(typ == 0)
        {
            if(adj[u][idx] == ty[u])
                rep = min(rep, g(u, rem-j, typ, idx + 1) + f(adj[u][idx], j - 1, 2));
            rep = min(rep, g(u, rem - j, typ, idx + 1) + f(adj[u][idx], j, 0));
        }
        else if(typ == 1)
        {
            rep = min(rep, g(u, rem - j, typ, idx + 1) + f(adj[u][idx], j - 1, 1));
            rep = min(rep, g(u, rem - j, typ, idx + 1) + f(adj[u][idx], j, 0));
            if(ty[u] == adj[u][idx])
            {
                rep = min(rep, g(u, rem - j, typ, idx + 1) + f(adj[u][idx], j - 1, 2));
                rep = min(rep, g(u, rem - j, typ, idx + 1) + f(adj[u][idx], j - 2, 3));
            }
        }
        else if(typ == 2)
        {
            rep = min(rep, g(u, rem - j, typ, idx + 1) + f(adj[u][idx], j - 1, 2));
            if(ty[u] != adj[u][idx])
                rep = min(rep, g(u, rem - j, typ, idx + 1) + f(adj[u][idx], j, 0));
        }
        else
        {
            rep = min(rep, g(u, rem - j, typ, idx + 1) + f(adj[u][idx], j - 2, 3));
            rep = min(rep, g(u, rem - j, typ, idx + 1) + f(adj[u][idx], j - 1, 2));
            if(ty[u] != adj[u][idx])
            {
                rep = min(rep, g(u, rem - j, typ, idx + 1) + f(adj[u][idx], j - 1, 1));
                rep = min(rep, g(u, rem - j, typ, idx + 1) + f(adj[u][idx], j, 0));
            }
        }
    }
    return memo[u][rem][typ][idx] = rep;
}
ll f(int u, int ans, int typ)
{
    if(ans < 0)
        return INF;
    if(dp[u][ans][typ] != -1)
        return dp[u][ans][typ];
    ll deplt = typ == 0? 0: typ == 1? dx[u]: typ == 2? dy[u]: max(dx[u], dy[u]);
    if(adj[u].empty())
        return dp[u][ans][typ] = ans > 0? INF: deplt;
    
    return dp[u][ans][typ] = g(u, ans, typ, 0)  + deplt;
}
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 ++)
    {
        A[i].clear();
        adj[i].clear();

    }
    memset(dp, -1, sizeof(dp));
    memset(memo, -1, sizeof(memo));
    for(int i = 0; i < n - 1; i++)
    {
        A[U[i]].pb({V[i], W[i]});
        A[V[i]].pb({U[i], W[i]});
    }
    tx[x] = x, ty[y] = y;
    dx[x] = dy[y] = 0ll;
    dfsx(x, x);
    dfsy(y, y);
    for(int i = 0; i < n; i++)
    {
        vector<int> v;
        for(auto e: A[i])
            if(e.ff != tx[i])
                adj[i].pb(e.ff);
    }
    for(int ans = 2; ans <= 2 * n; ans++)
    {
        ll cost = INF;
        cost = min(cost, f(x, ans, 0));
        cost = min(cost, f(x, ans - 1, 1));
        cost = min(cost, f(x, ans - 1, 2));
        cost = min(cost, f(x, ans - 2, 3));
        if(cost > k)
            return ans - 1;
    }
    return 2 * n;
}

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 187 ms 542384 KB Output is correct

Subtask #1
0.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 50 ms 4968 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
0.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 162 ms 542360 KB Output is correct
2 Correct 152 ms 542372 KB Output is correct
3 Correct 154 ms 542412 KB Output is correct
4 Correct 148 ms 542412 KB Output is correct
5 Correct 153 ms 542488 KB Output is correct
6 Correct 160 ms 542412 KB Output is correct
7 Correct 147 ms 542420 KB Output is correct
8 Correct 156 ms 542316 KB Output is correct
9 Correct 147 ms 542384 KB Output is correct
10 Incorrect 154 ms 542316 KB 1st lines differ - on the 1st token, expected: '44', found: '52'
11 Halted 0 ms 0 KB -

Subtask #3
0.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 162 ms 542360 KB Output is correct
2 Correct 152 ms 542372 KB Output is correct
3 Correct 154 ms 542412 KB Output is correct
4 Correct 148 ms 542412 KB Output is correct
5 Correct 153 ms 542488 KB Output is correct
6 Correct 160 ms 542412 KB Output is correct
7 Correct 147 ms 542420 KB Output is correct
8 Correct 156 ms 542316 KB Output is correct
9 Correct 147 ms 542384 KB Output is correct
10 Incorrect 154 ms 542316 KB 1st lines differ - on the 1st token, expected: '44', found: '52'
11 Halted 0 ms 0 KB -

Subtask #4
0.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 162 ms 542360 KB Output is correct
2 Correct 152 ms 542372 KB Output is correct
3 Correct 154 ms 542412 KB Output is correct
4 Correct 148 ms 542412 KB Output is correct
5 Correct 153 ms 542488 KB Output is correct
6 Correct 160 ms 542412 KB Output is correct
7 Correct 147 ms 542420 KB Output is correct
8 Correct 156 ms 542316 KB Output is correct
9 Correct 147 ms 542384 KB Output is correct
10 Incorrect 154 ms 542316 KB 1st lines differ - on the 1st token, expected: '44', found: '52'
11 Halted 0 ms 0 KB -

Subtask #5
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 187 ms 542384 KB Output is correct
2 Correct 162 ms 542360 KB Output is correct
3 Correct 152 ms 542372 KB Output is correct
4 Correct 154 ms 542412 KB Output is correct
5 Correct 148 ms 542412 KB Output is correct
6 Correct 153 ms 542488 KB Output is correct
7 Correct 148 ms 542428 KB Output is correct
8 Correct 146 ms 542412 KB Output is correct
9 Correct 157 ms 542376 KB Output is correct
10 Correct 147 ms 542332 KB Output is correct
11 Correct 148 ms 542396 KB Output is correct
12 Correct 148 ms 542416 KB Output is correct
13 Correct 146 ms 542384 KB Output is correct
14 Correct 151 ms 542500 KB Output is correct
15 Correct 147 ms 542412 KB Output is correct
16 Correct 146 ms 542416 KB Output is correct
17 Correct 148 ms 542412 KB Output is correct
18 Correct 148 ms 542308 KB Output is correct
19 Correct 147 ms 542372 KB Output is correct
20 Correct 149 ms 542324 KB Output is correct
21 Correct 154 ms 542412 KB Output is correct
22 Correct 149 ms 542352 KB Output is correct
23 Correct 155 ms 542412 KB Output is correct
24 Correct 168 ms 542540 KB Output is correct

Subtask #6
0.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 187 ms 542384 KB Output is correct
2 Correct 162 ms 542360 KB Output is correct
3 Correct 152 ms 542372 KB Output is correct
4 Correct 154 ms 542412 KB Output is correct
5 Correct 148 ms 542412 KB Output is correct
6 Correct 153 ms 542488 KB Output is correct
7 Correct 160 ms 542412 KB Output is correct
8 Correct 147 ms 542420 KB Output is correct
9 Correct 156 ms 542316 KB Output is correct
10 Correct 147 ms 542384 KB Output is correct
11 Incorrect 154 ms 542316 KB 1st lines differ - on the 1st token, expected: '44', found: '52'
12 Halted 0 ms 0 KB -

Subtask #7
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 187 ms 542384 KB Output is correct
2 Correct 162 ms 542360 KB Output is correct
3 Correct 152 ms 542372 KB Output is correct
4 Correct 154 ms 542412 KB Output is correct
5 Correct 148 ms 542412 KB Output is correct
6 Correct 153 ms 542488 KB Output is correct
7 Correct 160 ms 542412 KB Output is correct
8 Correct 147 ms 542420 KB Output is correct
9 Correct 156 ms 542316 KB Output is correct
10 Correct 147 ms 542384 KB Output is correct
11 Incorrect 154 ms 542316 KB 1st lines differ - on the 1st token, expected: '44', found: '52'
12 Halted 0 ms 0 KB -

Subtask #8
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 187 ms 542384 KB Output is correct
2 Correct 162 ms 542360 KB Output is correct
3 Correct 152 ms 542372 KB Output is correct
4 Correct 154 ms 542412 KB Output is correct
5 Correct 148 ms 542412 KB Output is correct
6 Correct 153 ms 542488 KB Output is correct
7 Correct 160 ms 542412 KB Output is correct
8 Correct 147 ms 542420 KB Output is correct
9 Correct 156 ms 542316 KB Output is correct
10 Correct 147 ms 542384 KB Output is correct
11 Incorrect 154 ms 542316 KB 1st lines differ - on the 1st token, expected: '44', found: '52'
12 Halted 0 ms 0 KB -

Subtask #9
0.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 187 ms 542384 KB Output is correct
2 Correct 162 ms 542360 KB Output is correct
3 Correct 152 ms 542372 KB Output is correct
4 Correct 154 ms 542412 KB Output is correct
5 Correct 148 ms 542412 KB Output is correct
6 Correct 153 ms 542488 KB Output is correct
7 Correct 160 ms 542412 KB Output is correct
8 Correct 147 ms 542420 KB Output is correct
9 Correct 156 ms 542316 KB Output is correct
10 Correct 147 ms 542384 KB Output is correct
11 Incorrect 154 ms 542316 KB 1st lines differ - on the 1st token, expected: '44', found: '52'
12 Halted 0 ms 0 KB -