제출 #497178

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
497178		MohamedFaresNebili	통행료 (IOI18_highway)	C++14	컴파일 에러	0 ms	0 KiB

highway

#include<bits/stdc++.h>
#include "highway.h"

        using namespace std;

        using ll  = long long;
        using ii = pair<ll, ll>;
        using vi  = vector<int>;

        #define pb push_back
        #define ff first
        #define ss second
        #define lb lower_bound
        #define all(x) (x).begin() , (x).end()

        vector<ii> adj[2*100005]; ll par[2*100005], dep[2*100005];
        void dfs(ll v, ll p) {
            dep[v] = dep[p] + 1;
            for(auto u : adj[v]) {
                if(u.ff == p) continue;
                par[u.ff] = u.ss; dfs(u.ff, v);
            }
        }

        ll ask(vector<ll> w);
        void answer(ll s, ll t);

        void find_pair(ll N, vector<ll> U, vector<ll> V, ll A, ll B) {
            ll M = U.size();
            vector<ll> w(M, 0); ll k = ask(w);
            k /= A;
            for(ll l = 0; l < M; l++) {
                ll u = U[l], v = V[l];
                adj[u].pb({v, l}); adj[v].pb({u, l});
            }
            dep[0] = -1; dfs(0, 0);
            vector<ll> ve;
            for(ll l = 0; l < N; l++) {
                if(dep[l] != k) continue;
                ve.push_back(l);
            }
            for(auto u : ve) {
                ll id = par[u];
                w[id] = 1; ll curr = ask(w); w[id] = 0;
                if(curr > k) { answer(0, u); return; }
            }
        }

컴파일 시 표준 에러 (stderr) 메시지

highway.cpp: In function 'void find_pair(ll, std::vector<long long int>, std::vector<long long int>, ll, ll)':
highway.cpp:45:43: error: call of overloaded 'answer(int, long long int&)' is ambiguous
   45 |                 if(curr > k) { answer(0, u); return; }
      |                                           ^
In file included from highway.cpp:2:
highway.h:8:6: note: candidate: 'void answer(int, int)'
    8 | void answer(int s, int t);
      |      ^~~~~~
highway.cpp:26:14: note: candidate: 'void answer(ll, ll)'
   26 |         void answer(ll s, ll t);
      |              ^~~~~~