Submission #394387

#	Time	Username	Problem	Language	Result	Execution time	Memory
394387		Theo830	Highway Tolls (IOI18_highway)	C++17	Compilation error	0 ms	0 KiB

highway

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll INF = 1e18+7;
ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ll,ii>
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Training
#include "highway.h"
ll par[90005] = {0};
ll dep[90005] = {0};
vector<vll>adj;
void dfs(ll u,ll p){
    par[u] = p;
    for(auto x:adj[u]){
        if(x != p){
            depth[x] = depth[u] + 1;
            dfs(x,u);
        }
    }
}
void find_pair(int N, std::vector<int> U, std::vector<int> V, int A, int B) {
    adj.assign(N+1,vll());
    ll m = U.size();
    f(i,0,m){
        adj[U[i]].pb(V[i]);
        adj[V[i]].pb(U[i]);
    }
    dfs(0,-1);
    ll s = 0,t;
    vector<int>w(m);
    w.assign(m,0);
    ll ans = ask(w);
    ll di = ans;
    ll de = 0;
    f(i,0,m){
        ll x = U[i];
        if(par[V[i]] == U[i]){
            x = V[i];
        }
        w[x] = 1;
        if(ask(w) != di){
            if(depth[x] > de){
                de = depth[x];
                t = x;
            }
        }
        w[x] = 0;
    }
    answer(s,t);
}

Compilation message (stderr)

highway.cpp: In function 'void dfs(ll, ll)':
highway.cpp:33:13: error: 'depth' was not declared in this scope; did you mean 'dep'?
   33 |             depth[x] = depth[u] + 1;
      |             ^~~~~
      |             dep
highway.cpp: In function 'void find_pair(int, std::vector<int>, std::vector<int>, int, int)':
highway.cpp:59:16: error: 'depth' was not declared in this scope; did you mean 'dep'?
   59 |             if(depth[x] > de){
      |                ^~~~~
      |                dep