oj.uz

답안 #406090

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
406090 2021-05-17T08:23:02 Z tengiz05 자매 도시 (APIO20_swap) C++17
0 / 100
 2000 ms 14116 KB 
#include "swap.h"
#include <bits/stdc++.h>
constexpr int N = 1e5;
std::vector<int> e[N];
std::vector<int> U, V, W;
int n, m;
void init(int n, int m, std::vector<int> U, std::vector<int> V, std::vector<int> W) {
    ::U = U;
    ::V = V;
    ::W = W;
    ::n = n;
    ::m = m;
}
std::vector<int> p;
std::vector<bool> vis;
bool have;
void dfs(int u, int P) {
    p[u] = P;
    vis[u] = true;
    if (e[u].size() > 2) have = true;
    for (auto v : e[u]) {
        if (!vis[v]) {
            dfs(v, u);
        }
    }
}
bool check(int X, int Y, int mid) {
    for (int i = 0; i < n; i++) e[i].clear();
    for (int i = 0; i < m; i++) {
        if (W[i] <= mid) {
            e[U[i]].emplace_back(V[i]);
            e[V[i]].emplace_back(U[i]);
        }
    }
    p.assign(n, -1);
    vis.assign(n, false);
    have = false;
    dfs(X, -1);
    if (p[Y] == -1)
        return false;
    if (have) {
        return true;
    }
    int y = Y;
    std::vector<int> got;
    y = p[y];
    while (y != -1 && p[y] != -1) {
        got.push_back(y);
        y = p[y];
    }
    y = Y;
    std::vector<bool> bad(n);
    for (auto x : got) {
        bad[x] = true;
        y = x;
    }
    for (int i = 0; i < n; i++) e[i].clear();
    for (int i = 0; i < m; i++) {
        if (W[i] <= mid && !bad[U[i]] && !bad[V[i]]
         && !((U[i] == X && V[i] == Y) || (U[i] == Y && V[i] == X))) {
            e[U[i]].emplace_back(V[i]);
            e[V[i]].emplace_back(U[i]);
        }
    }
    p.assign(n, -1);
    vis.assign(n, false);
    dfs(X, -1);
    if (p[Y] != -1)
        return true;
    return false;
}
int getMinimumFuelCapacity(int X, int Y) {
    std::vector<int> v = W;
    sort(v.begin(), v.end());
    int l = -1, r = v.size();
    while (l + 1 < r) {
        int mid = (l + r) / 2;
        if (check(X, Y, v[mid])) {
            r = mid;
        } else {
            l = mid;
        }
    }
    if (r == v.size()) return -1;
    return v[r];
}

Compilation message

swap.cpp: In function 'int getMinimumFuelCapacity(int, int)':
swap.cpp:84:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |     if (r == v.size()) return -1;
      |         ~~^~~~~~~~~~~

Subtask #1
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2632 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 4 ms 2636 KB Output is correct
6 Correct 5 ms 2636 KB Output is correct
7 Correct 4 ms 2636 KB Output is correct
8 Correct 6 ms 2636 KB Output is correct
9 Correct 213 ms 11560 KB Output is correct
10 Correct 649 ms 12892 KB Output is correct
11 Correct 707 ms 13544 KB Output is correct
12 Correct 788 ms 13640 KB Output is correct
13 Correct 1193 ms 14116 KB Output is correct
14 Execution timed out 2092 ms 12064 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Execution timed out 2082 ms 11092 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2632 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 4 ms 2636 KB Output is correct
6 Correct 5 ms 2636 KB Output is correct
7 Correct 4 ms 2636 KB Output is correct
8 Correct 6 ms 2636 KB Output is correct
9 Correct 5 ms 2636 KB Output is correct
10 Correct 4 ms 2636 KB Output is correct
11 Correct 4 ms 2636 KB Output is correct
12 Correct 4 ms 2636 KB Output is correct
13 Correct 4 ms 2636 KB Output is correct
14 Correct 4 ms 2696 KB Output is correct
15 Correct 4 ms 2636 KB Output is correct
16 Correct 7 ms 2636 KB Output is correct
17 Correct 6 ms 2636 KB Output is correct
18 Correct 4 ms 2636 KB Output is correct
19 Correct 4 ms 2636 KB Output is correct
20 Correct 4 ms 2636 KB Output is correct
21 Correct 4 ms 2636 KB Output is correct
22 Correct 4 ms 2636 KB Output is correct
23 Correct 4 ms 2688 KB Output is correct
24 Correct 6 ms 2636 KB Output is correct
25 Incorrect 6 ms 2748 KB Output isn't correct
26 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2632 KB Output is correct
5 Correct 3 ms 2636 KB Output is correct
6 Correct 4 ms 2636 KB Output is correct
7 Correct 5 ms 2636 KB Output is correct
8 Correct 4 ms 2636 KB Output is correct
9 Correct 6 ms 2636 KB Output is correct
10 Correct 213 ms 11560 KB Output is correct
11 Correct 649 ms 12892 KB Output is correct
12 Correct 707 ms 13544 KB Output is correct
13 Correct 788 ms 13640 KB Output is correct
14 Correct 1193 ms 14116 KB Output is correct
15 Correct 4 ms 2636 KB Output is correct
16 Correct 4 ms 2636 KB Output is correct
17 Correct 4 ms 2636 KB Output is correct
18 Correct 4 ms 2636 KB Output is correct
19 Correct 4 ms 2696 KB Output is correct
20 Correct 4 ms 2636 KB Output is correct
21 Correct 7 ms 2636 KB Output is correct
22 Correct 6 ms 2636 KB Output is correct
23 Correct 4 ms 2636 KB Output is correct
24 Correct 4 ms 2636 KB Output is correct
25 Correct 4 ms 2636 KB Output is correct
26 Correct 4 ms 2636 KB Output is correct
27 Correct 4 ms 2636 KB Output is correct
28 Correct 4 ms 2688 KB Output is correct
29 Correct 6 ms 2636 KB Output is correct
30 Incorrect 6 ms 2748 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2632 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 4 ms 2636 KB Output is correct
6 Correct 5 ms 2636 KB Output is correct
7 Correct 4 ms 2636 KB Output is correct
8 Correct 6 ms 2636 KB Output is correct
9 Correct 213 ms 11560 KB Output is correct
10 Correct 649 ms 12892 KB Output is correct
11 Correct 707 ms 13544 KB Output is correct
12 Correct 788 ms 13640 KB Output is correct
13 Correct 1193 ms 14116 KB Output is correct
14 Execution timed out 2092 ms 12064 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 2 ms 2632 KB Output is correct
5 Correct 3 ms 2636 KB Output is correct
6 Correct 4 ms 2636 KB Output is correct
7 Correct 5 ms 2636 KB Output is correct
8 Correct 4 ms 2636 KB Output is correct
9 Correct 6 ms 2636 KB Output is correct
10 Correct 213 ms 11560 KB Output is correct
11 Correct 649 ms 12892 KB Output is correct
12 Correct 707 ms 13544 KB Output is correct
13 Correct 788 ms 13640 KB Output is correct
14 Correct 1193 ms 14116 KB Output is correct
15 Execution timed out 2092 ms 12064 KB Time limit exceeded
16 Halted 0 ms 0 KB -