제출 #786348

#제출 시각아이디문제언어결과실행 시간메모리
786348vjudge1드문 곤충 (IOI22_insects)C++17
컴파일 에러
0 ms0 KiB
#include "insects.h"
#include <bits/stdc++.h>
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int min_cardinality(int N) {
    int cnt = 0;
    vector<bool> f(N);
    for (int i = 0; i < N; i++) {
        move_inside(i);
        if (press_button() <= 1) {
            f[i] = 1;
            cnt++;
        } else {
            move_outside(i);
        }
    }
    vector<int> blocked(N);
    for (int i = 0; i < N; i++) {
        if (f[i]) {
            blocked[i] = 1;
        }
    }
    int lo = 1, hi = N / cnt, in = cnt, ad = 1;
    while (lo < hi) {
        int mi = (lo + hi + 1) / 2;
        vector<int> ord(N);
        iota(ord.begin(), ord.end(), 0);
        shuffle(ord.begin(), ord.end(), rng());
        for (int i : ord) {
            if (f[i] || blocked[i]) {
                continue;
            }
            move_inside(i);
            if (press_button() <= mi) {
                in++;
                f[i] = 1;
            } else {
                move_outside(i);
            }
        }
        if (in == mi * cnt) {
            for (int i = 0; i < N; i++) {
                if (f[i]) {
                    blocked[i] = 1;
                }
            }
            lo = mi;
        } else {
            hi = in / cnt;
            for (int i = 0; i < N; i++) {
                if (!f[i]) {
                    blocked[i] = 1;
                }
                if (blocked[i]) {
                    continue;
                }
                if (f[i]) {
                    f[i] = 0;
                    in--;
                    move_outside(i);
                }
            }
        }
    }
    return lo;
}

컴파일 시 표준 에러 (stderr) 메시지

insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:23:41: warning: unused variable 'ad' [-Wunused-variable]
   23 |     int lo = 1, hi = N / cnt, in = cnt, ad = 1;
      |                                         ^~
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from insects.cpp:2:
/usr/include/c++/10/bits/stl_algo.h: In instantiation of 'void std::shuffle(_RAIter, _RAIter, _UGenerator&&) [with _RAIter = __gnu_cxx::__normal_iterator<int*, std::vector<int> >; _UGenerator = long unsigned int]':
insects.cpp:28:46:   required from here
/usr/include/c++/10/bits/stl_algo.h:3769:2: error: 'std::remove_reference<long unsigned int>::type' {aka 'long unsigned int'} is not a class, struct, or union type
 3769 |  __uc_type;
      |  ^~~~~~~~~
/usr/include/c++/10/bits/stl_algo.h:3797:37: error: 'std::remove_reference<long unsigned int>::type' {aka 'long unsigned int'} is not a class, struct, or union type
 3797 |    const pair<__uc_type, __uc_type> __pospos =
      |                                     ^~~~~~~~
/usr/include/c++/10/bits/stl_algo.h:3797:37: error: 'std::remove_reference<long unsigned int>::type' {aka 'long unsigned int'} is not a class, struct, or union type