Submission #418295

#	Time	Username	Problem	Language	Result	Execution time	Memory
418295		FlippenFaz	Highway Tolls (IOI18_highway)	C++11	Compilation error	0 ms	0 KiB

highway

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

void answer(int s, int t);

set<int> curCities;

void find_pair(int N, vector<int> U, vector<int> V, int A, int B) {
    vector<int> askArr;
    askArr.resize(U.size());
    ll sml = ask(askArr);
    askArr[0] = 1;
    ll cur = ask(askArr);
    if (cur > sml) {
        curCities.insert(U[0]);
        curCities.insert(V[0]);
    }
    for (int i = 1; i < askArr.size(); i++) {
        U[i-1] = 0;
        U[i] = 1;
        ll cur = ask(askArr);

        if (cur > sml) {
            if (curCities.erase(U[i]) == 0) {
                curCities.insert(U[i]);
            }
            if (curCities.erase(V[i]) == 0) {
                curCities.insert(V[i]);
            }
        }
    }

    vector<int> cits;
    for (auto it = curCities.begin(); it != curCities.end(); it++) {
        cits.push_back(*it);
    }
    answer(cits[0], cits[1]);
    
}

Compilation message (stderr)

highway.cpp: In function 'void find_pair(int, std::vector<int>, std::vector<int>, int, int)':
highway.cpp:13:14: error: 'ask' was not declared in this scope
   13 |     ll sml = ask(askArr);
      |              ^~~
highway.cpp:20:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     for (int i = 1; i < askArr.size(); i++) {
      |                     ~~^~~~~~~~~~~~~~~