oj.uz

Submission #406110

# Submission time Handle Problem Language Result Execution time Memory
406110 2021-05-17T08:31:18 Z tengiz05 Swapping Cities (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, v;
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;
    v = W;
    sort(v.begin(), v.end());
}
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) {
    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

# Verdict Execution time Memory Grader output
1 Correct 2 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 3 ms 2636 KB Output is correct
5 Correct 4 ms 2636 KB Output is correct
6 Correct 4 ms 2636 KB Output is correct
7 Correct 4 ms 2636 KB Output is correct
8 Correct 5 ms 2636 KB Output is correct
9 Correct 237 ms 11580 KB Output is correct
10 Correct 656 ms 12904 KB Output is correct
11 Correct 733 ms 13640 KB Output is correct
12 Correct 736 ms 13616 KB Output is correct
13 Correct 1299 ms 14116 KB Output is correct
14 Execution timed out 2072 ms 12296 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Execution timed out 2057 ms 11092 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 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 3 ms 2636 KB Output is correct
5 Correct 4 ms 2636 KB Output is correct
6 Correct 4 ms 2636 KB Output is correct
7 Correct 4 ms 2636 KB Output is correct
8 Correct 5 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 4 ms 2700 KB Output is correct
11 Correct 4 ms 2636 KB Output is correct
12 Correct 4 ms 2636 KB Output is correct
13 Correct 5 ms 2636 KB Output is correct
14 Correct 4 ms 2636 KB Output is correct
15 Correct 4 ms 2636 KB Output is correct
16 Correct 5 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 5 ms 2636 KB Output is correct
20 Correct 5 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 2636 KB Output is correct
24 Correct 6 ms 2636 KB Output is correct
25 Incorrect 5 ms 2636 KB Output isn't correct
26 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 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 2636 KB Output is correct
5 Correct 3 ms 2636 KB Output is correct
6 Correct 4 ms 2636 KB Output is correct
7 Correct 4 ms 2636 KB Output is correct
8 Correct 4 ms 2636 KB Output is correct
9 Correct 5 ms 2636 KB Output is correct
10 Correct 237 ms 11580 KB Output is correct
11 Correct 656 ms 12904 KB Output is correct
12 Correct 733 ms 13640 KB Output is correct
13 Correct 736 ms 13616 KB Output is correct
14 Correct 1299 ms 14116 KB Output is correct
15 Correct 4 ms 2700 KB Output is correct
16 Correct 4 ms 2636 KB Output is correct
17 Correct 4 ms 2636 KB Output is correct
18 Correct 5 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 5 ms 2636 KB Output is correct
22 Correct 4 ms 2636 KB Output is correct
23 Correct 4 ms 2636 KB Output is correct
24 Correct 5 ms 2636 KB Output is correct
25 Correct 5 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 2636 KB Output is correct
29 Correct 6 ms 2636 KB Output is correct
30 Incorrect 5 ms 2636 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 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 3 ms 2636 KB Output is correct
5 Correct 4 ms 2636 KB Output is correct
6 Correct 4 ms 2636 KB Output is correct
7 Correct 4 ms 2636 KB Output is correct
8 Correct 5 ms 2636 KB Output is correct
9 Correct 237 ms 11580 KB Output is correct
10 Correct 656 ms 12904 KB Output is correct
11 Correct 733 ms 13640 KB Output is correct
12 Correct 736 ms 13616 KB Output is correct
13 Correct 1299 ms 14116 KB Output is correct
14 Execution timed out 2072 ms 12296 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 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 2636 KB Output is correct
5 Correct 3 ms 2636 KB Output is correct
6 Correct 4 ms 2636 KB Output is correct
7 Correct 4 ms 2636 KB Output is correct
8 Correct 4 ms 2636 KB Output is correct
9 Correct 5 ms 2636 KB Output is correct
10 Correct 237 ms 11580 KB Output is correct
11 Correct 656 ms 12904 KB Output is correct
12 Correct 733 ms 13640 KB Output is correct
13 Correct 736 ms 13616 KB Output is correct
14 Correct 1299 ms 14116 KB Output is correct
15 Execution timed out 2072 ms 12296 KB Time limit exceeded
16 Halted 0 ms 0 KB -