Submission #650817

#	Time	Username	Problem	Language	Result	Execution time	Memory
650817		kunzaZa183	Coins (IOI17_coins)	C++17	100 / 100	11 ms	1572 KiB

coins

#include <bits/stdc++.h>
#include "coins.h"
using namespace std;
vector<int> coin_flips(vector<int> b, int c)
{
    int cur = 0;
    for (int i = 0; i < b.size(); i++)
        if (b[i] == 1)
            cur = int(cur ^ i);
    vector<int> vi;
    for (int i = 0; i < 64; i++)
    {
        if (int(cur ^ i) == c)
        {
            vi.push_back(i);
            break;
        }
    }
    return vi;
}
int find_coin(vector<int> b)
{
    int cur = 0;
    for (int i = 0; i < b.size(); i++)
        if (b[i] == 1)
            cur = cur ^ i;
    return cur;
}

Compilation message (stderr)

coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:7:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    7 |     for (int i = 0; i < b.size(); i++)
      |                     ~~^~~~~~~~~~
coins.cpp: In function 'int find_coin(std::vector<int>)':
coins.cpp:24:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |     for (int i = 0; i < b.size(); i++)
      |                     ~~^~~~~~~~~~

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