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답안 #840826

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
840826 2023-08-31T18:03:50 Z MohamedAliSaidane 봉쇄 시간 (IOI23_closing) C++17
9 / 100
 193 ms 542504 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 + 2;

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++)
    {
        ll nxt = g(u, rem - j, typ, idx + 1);
        if(typ == 0)
        {
            if(ty[adj[u][idx]] != u)
                rep = min(rep, g(u, rem-j, typ, idx + 1) + f(adj[u][idx], j - 1, 2));
            rep = min(rep, nxt + f(adj[u][idx], j, 0));
        }
        else if(typ == 1)
        {
            rep = min(rep, nxt + f(adj[u][idx], j - 1, 1));
            rep = min(rep, nxt + f(adj[u][idx], j, 0));
            if(ty[adj[u][idx]] != u)
            {
                rep = min(rep, nxt + f(adj[u][idx], j - 1, 2));
                rep = min(rep, nxt + f(adj[u][idx], j - 2, 3));
            }
        }
        else if(typ == 2)
        {
            rep = min(rep, nxt + f(adj[u][idx], j - 1, 2));
            if(ty[u] != adj[u][idx])
                rep = min(rep, nxt + f(adj[u][idx], j, 0));
        }
        else 
        {
            rep = min(rep, nxt + f(adj[u][idx], j - 2, 3));
            rep = min(rep, nxt + f(adj[u][idx], j - 1, 2));
            if(ty[u] != adj[u][idx])
            {
                rep = min(rep, nxt + f(adj[u][idx], j - 1, 1));
                rep = min(rep, nxt + 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 193 ms 542376 KB Output is correct

Subtask #1
0.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 51 ms 4988 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 148 ms 542408 KB Output is correct
2 Correct 147 ms 542408 KB Output is correct
3 Correct 148 ms 542412 KB Output is correct
4 Correct 147 ms 542376 KB Output is correct
5 Correct 146 ms 542380 KB Output is correct
6 Correct 156 ms 542356 KB Output is correct
7 Correct 147 ms 542388 KB Output is correct
8 Correct 157 ms 542348 KB Output is correct
9 Correct 153 ms 542424 KB Output is correct
10 Incorrect 167 ms 542368 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 148 ms 542408 KB Output is correct
2 Correct 147 ms 542408 KB Output is correct
3 Correct 148 ms 542412 KB Output is correct
4 Correct 147 ms 542376 KB Output is correct
5 Correct 146 ms 542380 KB Output is correct
6 Correct 156 ms 542356 KB Output is correct
7 Correct 147 ms 542388 KB Output is correct
8 Correct 157 ms 542348 KB Output is correct
9 Correct 153 ms 542424 KB Output is correct
10 Incorrect 167 ms 542368 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 148 ms 542408 KB Output is correct
2 Correct 147 ms 542408 KB Output is correct
3 Correct 148 ms 542412 KB Output is correct
4 Correct 147 ms 542376 KB Output is correct
5 Correct 146 ms 542380 KB Output is correct
6 Correct 156 ms 542356 KB Output is correct
7 Correct 147 ms 542388 KB Output is correct
8 Correct 157 ms 542348 KB Output is correct
9 Correct 153 ms 542424 KB Output is correct
10 Incorrect 167 ms 542368 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 193 ms 542376 KB Output is correct
2 Correct 148 ms 542408 KB Output is correct
3 Correct 147 ms 542408 KB Output is correct
4 Correct 148 ms 542412 KB Output is correct
5 Correct 147 ms 542376 KB Output is correct
6 Correct 146 ms 542380 KB Output is correct
7 Correct 149 ms 542412 KB Output is correct
8 Correct 152 ms 542504 KB Output is correct
9 Correct 148 ms 542408 KB Output is correct
10 Correct 151 ms 542396 KB Output is correct
11 Correct 155 ms 542340 KB Output is correct
12 Correct 148 ms 542408 KB Output is correct
13 Correct 151 ms 542412 KB Output is correct
14 Correct 151 ms 542312 KB Output is correct
15 Correct 150 ms 542400 KB Output is correct
16 Correct 148 ms 542484 KB Output is correct
17 Correct 149 ms 542412 KB Output is correct
18 Correct 147 ms 542412 KB Output is correct
19 Correct 149 ms 542304 KB Output is correct
20 Correct 149 ms 542412 KB Output is correct
21 Correct 150 ms 542412 KB Output is correct
22 Correct 154 ms 542316 KB Output is correct
23 Correct 155 ms 542368 KB Output is correct
24 Correct 149 ms 542412 KB Output is correct

Subtask #6
0.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 193 ms 542376 KB Output is correct
2 Correct 148 ms 542408 KB Output is correct
3 Correct 147 ms 542408 KB Output is correct
4 Correct 148 ms 542412 KB Output is correct
5 Correct 147 ms 542376 KB Output is correct
6 Correct 146 ms 542380 KB Output is correct
7 Correct 156 ms 542356 KB Output is correct
8 Correct 147 ms 542388 KB Output is correct
9 Correct 157 ms 542348 KB Output is correct
10 Correct 153 ms 542424 KB Output is correct
11 Incorrect 167 ms 542368 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 193 ms 542376 KB Output is correct
2 Correct 148 ms 542408 KB Output is correct
3 Correct 147 ms 542408 KB Output is correct
4 Correct 148 ms 542412 KB Output is correct
5 Correct 147 ms 542376 KB Output is correct
6 Correct 146 ms 542380 KB Output is correct
7 Correct 156 ms 542356 KB Output is correct
8 Correct 147 ms 542388 KB Output is correct
9 Correct 157 ms 542348 KB Output is correct
10 Correct 153 ms 542424 KB Output is correct
11 Incorrect 167 ms 542368 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 193 ms 542376 KB Output is correct
2 Correct 148 ms 542408 KB Output is correct
3 Correct 147 ms 542408 KB Output is correct
4 Correct 148 ms 542412 KB Output is correct
5 Correct 147 ms 542376 KB Output is correct
6 Correct 146 ms 542380 KB Output is correct
7 Correct 156 ms 542356 KB Output is correct
8 Correct 147 ms 542388 KB Output is correct
9 Correct 157 ms 542348 KB Output is correct
10 Correct 153 ms 542424 KB Output is correct
11 Incorrect 167 ms 542368 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 193 ms 542376 KB Output is correct
2 Correct 148 ms 542408 KB Output is correct
3 Correct 147 ms 542408 KB Output is correct
4 Correct 148 ms 542412 KB Output is correct
5 Correct 147 ms 542376 KB Output is correct
6 Correct 146 ms 542380 KB Output is correct
7 Correct 156 ms 542356 KB Output is correct
8 Correct 147 ms 542388 KB Output is correct
9 Correct 157 ms 542348 KB Output is correct
10 Correct 153 ms 542424 KB Output is correct
11 Incorrect 167 ms 542368 KB 1st lines differ - on the 1st token, expected: '44', found: '52'
12 Halted 0 ms 0 KB -