Submission #385462

#	Time	Username	Problem	Language	Result	Execution time	Memory
385462		BlancaHM	Coins (IOI17_coins)	C++14	Compilation error	0 ms	0 KiB

coins

#include "coins.h"
using namespace std;

vector<int> coin_flips(vector<int> b, int c) {
    vector<int> flips();
    int xor = 0;
    for (int i = 0; i < (int) b.size(); i++) {
        if (b[i]) xor ^= i;
    }
    if (xor == c)
        flips.push_back(0);
    else
        flips.push_back(xor^c);
    return flips;
}

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

Compilation message (stderr)

coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:6:9: error: expected unqualified-id before 'xor' token
    6 |     int xor = 0;
      |         ^~~
coins.cpp:8:19: error: expected primary-expression before 'xor' token
    8 |         if (b[i]) xor ^= i;
      |                   ^~~
coins.cpp:8:23: error: expected primary-expression before '^=' token
    8 |         if (b[i]) xor ^= i;
      |                       ^~
coins.cpp:10:9: error: expected primary-expression before 'xor' token
   10 |     if (xor == c)
      |         ^~~
coins.cpp:10:13: error: expected primary-expression before '==' token
   10 |     if (xor == c)
      |             ^~
coins.cpp:11:15: error: request for member 'push_back' in 'flips', which is of non-class type 'std::vector<int>()'
   11 |         flips.push_back(0);
      |               ^~~~~~~~~
coins.cpp:13:15: error: request for member 'push_back' in 'flips', which is of non-class type 'std::vector<int>()'
   13 |         flips.push_back(xor^c);
      |               ^~~~~~~~~
coins.cpp:13:25: error: expected primary-expression before 'xor' token
   13 |         flips.push_back(xor^c);
      |                         ^~~
coins.cpp:13:28: error: expected primary-expression before '^' token
   13 |         flips.push_back(xor^c);
      |                            ^
coins.cpp:14:12: error: could not convert 'flips' from 'std::vector<int>()' to 'std::vector<int>'
   14 |     return flips;
      |            ^~~~~
      |            |
      |            std::vector<int>()
coins.cpp: In function 'int find_coin(std::vector<int>)':
coins.cpp:18:9: error: expected unqualified-id before 'xor' token
   18 |     int xor = 0;
      |         ^~~
coins.cpp:20:19: error: expected primary-expression before 'xor' token
   20 |         if (b[i]) xor ^= i;
      |                   ^~~
coins.cpp:20:23: error: expected primary-expression before '^=' token
   20 |         if (b[i]) xor ^= i;
      |                       ^~
coins.cpp:22:12: error: expected primary-expression before 'xor' token
   22 |     return xor;
      |            ^~~
coins.cpp:22:15: error: expected primary-expression before ';' token
   22 |     return xor;
      |               ^