Submission #1005840

#	Time	Username	Problem	Language	Result	Execution time	Memory
1005840		irmuun	Highway Tolls (IOI18_highway)	C++17	5 / 100	9 ms	1248 KiB

highway

#include<bits/stdc++.h>
#include "highway.h"
 
using namespace std;
 
#define ll long long
#define pb push_back
#define ff first
#define ss second
#define all(s) s.begin(),s.end()
#define rall(s) s.rbegin(),s.rend()

void find_pair(int n,vector<int>u,vector<int>v,int A, int B){
    int m=u.size();
    vector<int>w(m,0);
    vector<pair<int,int>>adj[n];
    for(int i=0;i<m;i++){
        adj[u[i]].pb({v[i],i});
        adj[v[i]].pb({u[i],i});
    }
    ll C=ask(w);
    for(int t=1;t<n;t++){
        for(auto [_,i]:adj[t]){
            w[i]=1;
        }
        ll cost=ask(w);
        if(cost==C-A+B){
            answer(0,t);
            break;
        }
        for(auto [_,i]:adj[t]){
            w[i]=0;
        }
    }
    return;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 7
• Subtask 3: 0 / 6
• Subtask 4: 0 / 33
• Subtask 5: 0 / 18
• Subtask 6: 0 / 31