Submission #406082

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
406082	2021-05-17 08:17:47	tengiz05	Swapping Cities (APIO20_swap)	C++17	0 / 100	2090 ms	13236 KiB

swap

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#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) {
 
 
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Compilation message (stderr)

swap.cpp: In function 'bool check(int, int, int)':
swap.cpp:59:68: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   59 |         if (W[i] <= mid && !bad[U[i]] && !bad[V[i]] && !(U[i] == X && V[i] == Y || U[i] == Y && V[i] == X)) {

• Subtask 1: 0 / 6
• Subtask 2: 0 / 7
• Subtask 3: 0 / 17
• Subtask 4: 0 / 20
• Subtask 5: 0 / 23
• Subtask 6: 0 / 27