Submission #787810

#	Time	Username	Problem	Language	Result	Execution time	Memory
787810		borisAngelov	Coins (IOI17_coins)	C++17	Compilation error	0 ms	0 KiB

coins

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

using namespace std;

vector<int> coin_flips(vector<int> b, int c)
{
    vector<int> result(1);

    int xor = c;

    for (int i = 0; i < b.size(); ++i)
    {
        if (b[i] != 0)
        {
            xor = (xor ^ b[i]);
        }
    }

    result[0] = xor;
    return result;
}

int find_coin(vector<int> b)
{
    int ans = 0;

    for (int i = 0; i < b.size(); ++i)
    {
        if (b[i] != 0)
        {
            ans = (ans ^ b[i]);
        }
    }

    return ans;
}

Compilation message (stderr)

coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:10:9: error: expected unqualified-id before 'xor' token
   10 |     int xor = c;
      |         ^~~
coins.cpp:12:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 |     for (int i = 0; i < b.size(); ++i)
      |                     ~~^~~~~~~~~~
coins.cpp:16:13: error: expected primary-expression before 'xor' token
   16 |             xor = (xor ^ b[i]);
      |             ^~~
coins.cpp:16:17: error: expected primary-expression before '=' token
   16 |             xor = (xor ^ b[i]);
      |                 ^
coins.cpp:16:20: error: expected primary-expression before 'xor' token
   16 |             xor = (xor ^ b[i]);
      |                    ^~~
coins.cpp:16:24: error: expected primary-expression before '^' token
   16 |             xor = (xor ^ b[i]);
      |                        ^
coins.cpp:20:17: error: expected primary-expression before 'xor' token
   20 |     result[0] = xor;
      |                 ^~~
coins.cpp:20:20: error: expected primary-expression before ';' token
   20 |     result[0] = xor;
      |                    ^
coins.cpp: In function 'int find_coin(std::vector<int>)':
coins.cpp:28:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for (int i = 0; i < b.size(); ++i)
      |                     ~~^~~~~~~~~~