Submission #1291485

#	Time	Username	Problem	Language	Result	Execution time	Memory
1291485		yuichiro17	Coins (IOI17_coins)	C++20	100 / 100	6 ms	748 KiB

coins

#include "coins.h"

std::vector<int> coin_flips(std::vector<int> b, int c) {
    int x=c;
    for(int i=0;i<64;i++){
        x^=i*b[i];
    }
    return {x};
}

int find_coin(std::vector<int> b) {
    int x=0;
    for(int i=0;i<64;i++){
        x^=i*b[i];
    }
    return x;
}

Compilation message (stderr)

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