Submission #1264509

#	Time	Username	Problem	Language	Result	Execution time	Memory
1264509		DeltaStruct	Coins (IOI17_coins)	C++20	Compilation error	0 ms	0 KiB

coins

#include <bits/stdc++.h>
using namespace std;

int[] coin_flips(int b[],int c){
  vector<int> R(b,b+64); int r(0); for (int i(0);i < 64;++i) r ^= b[i]*i;
  R[r] ^= 1;
  return R.data();
}

int find_coin(int[] b){
  int r(0); for (int i(0);i < 64;++i) r ^= b[i]*i;
  return r;
}

Compilation message (stderr)

coins.cpp:4:4: error: structured binding declaration cannot have type 'int'
    4 | int[] coin_flips(int b[],int c){
      |    ^~
coins.cpp:4:4: note: type must be cv-qualified 'auto' or reference to cv-qualified 'auto'
coins.cpp:4:4: error: empty structured binding declaration
coins.cpp:4:7: error: expected initializer before 'coin_flips'
    4 | int[] coin_flips(int b[],int c){
      |       ^~~~~~~~~~
coins.cpp:10:21: error: expected ',' or '...' before 'b'
   10 | int find_coin(int[] b){
      |                     ^
coins.cpp: In function 'int find_coin(int*)':
coins.cpp:11:44: error: 'b' was not declared in this scope
   11 |   int r(0); for (int i(0);i < 64;++i) r ^= b[i]*i;
      |                                            ^