제출 #1297266

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1297266		the_commando_x	Coins (IOI17_coins)	C++20	100 / 100	10 ms	764 KiB

coins

#include "coins.h"

std::vector<int> coin_flips(std::vector<int> b, int c)
{
    std::vector<int> flips(1);
    int XOR = 0;
    for (int i = 0; i < 64; ++i)
        if (b[i])
            XOR ^= i;

    return {XOR ^ c};
}

int find_coin(std::vector<int> b)
{
    int XOR = 0;
    for (int i = 0; i < 64; ++i)
        if (b[i])
            XOR ^= i;

    return XOR;
}

컴파일 시 표준 에러 (stderr) 메시지

grader.cpp: In function 'void shuffle(std::vector<int>&)':
grader.cpp:88:23: warning: 'void std::random_shuffle(_RAIter, _RAIter) [with _RAIter = __gnu_cxx::__normal_iterator<int*, vector<int> >]' is deprecated: use 'std::shuffle' instead [-Wdeprecated-declarations]
   88 |         random_shuffle(v.begin(), v.end());
      |         ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/13/algorithm:61,
                 from grader.cpp:5:
/usr/include/c++/13/bits/stl_algo.h:4581:5: note: declared here
 4581 |     random_shuffle(_RandomAccessIterator __first, _RandomAccessIterator __last)
      |     ^~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 15 / 15
• Subtask 3: 10 / 10
• Subtask 4: 15 / 15
• Subtask 5: 50 / 50