제출 #418284

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
418284		FlippenFaz	Highway Tolls (IOI18_highway)	C++11	컴파일 에러	0 ms	0 KiB

highway

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

typedef long long ll;

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

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]);
    
}

컴파일 시 표준 에러 (stderr) 메시지

highway.cpp: In function 'void find_pair(int, std::vector<int>, std::vector<int>, int, int)':
highway.cpp:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for (int i = 1; i < askArr.size(); i++) {
      |                     ~~^~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccG6w2T3.o: in function `find_pair(int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, int, int)':
highway.cpp:(.text+0x221): undefined reference to `ask(std::vector<int, std::allocator<int> >)'
/usr/bin/ld: highway.cpp:(.text+0x2b7): undefined reference to `ask(std::vector<int, std::allocator<int> >)'
/usr/bin/ld: highway.cpp:(.text+0x389): undefined reference to `ask(std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status