Submission #1115110

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1115110	2024-11-20 04:21:18	Icelast	One-Way Streets (CEOI17_oneway)	C++17	0 / 100	1 ms	336 KiB

oneway

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#include <iostream>
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll maxn = 2*1e5+5, INF = 4e18+9;
struct Tree{
    int n, root;
    vector<int> depth, head, sz, pa;
    vector<int> f;
    Tree(int n, int root, vector<vector<int>> &adj): n(n), root(root){
        depth.resize(n+1, -1);
        head.resize(n+1);
        sz.resize(n+1, 0);
        pa.resize(n+1, -1);
        auto rootTree = [&](auto rootTree, int u, int p) -> void{
            depth[u] = depth[p]+1;
            pa[u] = p;
            sz[u] = 1;
            for(int v : adj[u]){
                if(v == p) continue;
                rootTree(rootTree, v, u);
                sz[u] += sz[v];
            }
        };
        rootTree(rootTree, root, 0);
        auto decompose = [&](auto decompose, int u, int h) -> void{
            head[u] = h;
            int heavy = -1;
            for(int v : adj[u]){
                if(v == pa[u]) continue;
 
 
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Compilation message (stderr)

oneway.cpp: In function 'void solve()':
oneway.cpp:174:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<edge> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  174 |     for(int i = 1; i < tree.size(); i++){
      |                    ~~^~~~~~~~~~~~~

• Subtask 1: 0 / 30
• Subtask 2: 0 / 30
• Subtask 3: 0 / 40