제출 #928069

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
928069		EJIC_B_KEDAX	카니발 티켓 (IOI20_tickets)	C++17	컴파일 에러	0 ms	0 KiB

tickets

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

using ll = long long;

using namespace std;

int64_t find_maximum(int k, vector<vector<int>> t) {
    int n = t.size(), m = t[0].size();
    vector<int> all;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            all.push_back(t[i][j]);
        }
    }
    sort(all.begin(), all.end());
    int middle = all[all.size() / 2];
    ll res = 0;
    vector<pair<ll, int>> a(n);
    vector<int> bg(n, 0), end(n, m - 1);
    vector<vector<int>> s(n, vector<int>(m, -1));
    for (int i = 0; i < n; i++) {
        a[i].first = 0;
        a[i].second = i;
        for (int j = 0; j < m; j++) {
            t[i][j] -= middle;
            res += abs(a[i][j]);
            a[i].first += t[i][j];
        }
    }
    for (int r = 0; r < k; r++) {
        sort(a.begin(), a.end());
        for (int i = 0; i < n / 2; i++) {
            a[i].first -= t[a[i].second][bg[a[i].second]];
            s[a[i].second][bg[a[i].second]++] = r;
        }
        for (int i = n / 2; i < n; i++) {
            a[i].first -= t[a[i].second][end[a[i].second]];
            s[a[i].second][end[a[i].second]--] = r;
        }
    }
    allocate_tickets(s);
    return res;
}

컴파일 시 표준 에러 (stderr) 메시지

tickets.cpp:8:9: error: ambiguating new declaration of 'int64_t find_maximum(int, std::vector<std::vector<int> >)'
    8 | int64_t find_maximum(int k, vector<vector<int>> t) {
      |         ^~~~~~~~~~~~
In file included from tickets.cpp:2:
tickets.h:3:11: note: old declaration 'long long int find_maximum(int, std::vector<std::vector<int> >)'
    3 | long long find_maximum(int k, std::vector<std::vector<int>> d);
      |           ^~~~~~~~~~~~
tickets.cpp: In function 'int64_t find_maximum(int, std::vector<std::vector<int> >)':
tickets.cpp:27:28: error: no match for 'operator[]' (operand types are '__gnu_cxx::__alloc_traits<std::allocator<std::pair<long long int, int> >, std::pair<long long int, int> >::value_type' {aka 'std::pair<long long int, int>'} and 'int')
   27 |             res += abs(a[i][j]);
      |                            ^