Submission #1238001

#	Time	Username	Problem	Language	Result	Execution time	Memory
1238001		ayathk	Coins (IOI17_coins)	C++20	Compilation error	0 ms	0 KiB

coins

#include <bits/stdc++.h>
#include "coins.h"
using namespace std;
#define fi first 
#define se second 
#define all(a) a.begin(),a.end()
#define pb push_back
const int maxn = 2e5+1;

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

  int o = 0 ,z = 0;
  for(int i : b){
    if(i == 1)o++;
    else z++;
  }

  int ch = -1;
  if(o > z)ch = 1;
  else ch = 0;

  if(b[c] == ch){
    for(int i = 0;i < n;i++){
      if(b[i] == ch && i != c)d.push_back(i);
    }
  }
  else{
    d.push_back(c);
  }
  return d;
}

int find_coin(vector <int> b){
  int o = 0 ,z = 0;
  for(int i : b){
    if(i == 1)o++;
    else z++;
  }

  int ch = -1;
  if(o < z)ch = 1;
  else ch = 0;

  for(int i = 0;i < b.size();i++){
    if(b[i] == ch)return i;
  }
}

Compilation message (stderr)

coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:24:23: error: 'n' was not declared in this scope
   24 |     for(int i = 0;i < n;i++){
      |                       ^
coins.cpp: In function 'int find_coin(std::vector<int>)':
coins.cpp:48:1: warning: control reaches end of non-void function [-Wreturn-type]
   48 | }
      | ^