oj.uz

답안 #840808

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
840808 2023-08-31T17:26:53 Z MohamedAliSaidane 봉쇄 시간 (IOI23_closing) C++17
0 / 100
 988 ms 2097152 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 = 1e13;

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];
int cnt = 0;
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)
{
    K =min(K, (ll)(1e12));
    n = N, x = X, y = Y, k = K;
    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;
    }
    cnt++;
    assert(cnt == 1);
    return 2 * n;
}

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 988 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #1
0.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 666 ms 1074352 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 198 ms 542304 KB Output is correct
2 Correct 166 ms 542424 KB Output is correct
3 Correct 147 ms 542364 KB Output is correct
4 Correct 158 ms 542376 KB Output is correct
5 Correct 155 ms 542432 KB Output is correct
6 Correct 162 ms 542388 KB Output is correct
7 Correct 149 ms 542412 KB Output is correct
8 Correct 155 ms 542432 KB Output is correct
9 Correct 151 ms 542400 KB Output is correct
10 Incorrect 155 ms 542372 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 198 ms 542304 KB Output is correct
2 Correct 166 ms 542424 KB Output is correct
3 Correct 147 ms 542364 KB Output is correct
4 Correct 158 ms 542376 KB Output is correct
5 Correct 155 ms 542432 KB Output is correct
6 Correct 162 ms 542388 KB Output is correct
7 Correct 149 ms 542412 KB Output is correct
8 Correct 155 ms 542432 KB Output is correct
9 Correct 151 ms 542400 KB Output is correct
10 Incorrect 155 ms 542372 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 198 ms 542304 KB Output is correct
2 Correct 166 ms 542424 KB Output is correct
3 Correct 147 ms 542364 KB Output is correct
4 Correct 158 ms 542376 KB Output is correct
5 Correct 155 ms 542432 KB Output is correct
6 Correct 162 ms 542388 KB Output is correct
7 Correct 149 ms 542412 KB Output is correct
8 Correct 155 ms 542432 KB Output is correct
9 Correct 151 ms 542400 KB Output is correct
10 Incorrect 155 ms 542372 KB 1st lines differ - on the 1st token, expected: '44', found: '52'
11 Halted 0 ms 0 KB -

Subtask #5
0.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 988 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #6
0.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 988 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #7
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 988 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #8
0.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 988 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #9
0.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 988 ms 2097152 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -