Submission #1282563

#	Time	Username	Problem	Language	Result	Execution time	Memory
1282563		repmann	Gondola (IOI14_gondola)	C++20	Compilation error	0 ms	0 KiB

gondola

#include <bits/stdc++.h>
using namespace std;
int N;
int A[200000];
int valid(int n, int a[])
{
  N = n;
  set <int> SET;
  for(int i = 0; i < N; i++) if(!SET.insert(a[i]).second) return 0;
  for(int i = 0; i < N; i++) A[i] = A[i + N] = a[i];
  int index = 0;
  for(int i = 1; i < N; i++) if(A[i] < A[index]) index = i;
  if(A[index] > N) return 1;
  for(int i = index; i < (index + N); i++)
  {
    if((A[i] <= N) && (A[index] != (A[i] - (i - index)))) return 0;
  }
  return 1;
}
int main()
{
  int n;
  cin >> n;
  int a[n];
  for(int i = 0; i < n; i++) cin >> a[i];
  cout << valid(n, a) << '\n';
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccypn7zE.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccLhP0t7.o:gondola.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccypn7zE.o: in function `main':
grader.cpp:(.text.startup+0xae): undefined reference to `valid'
/usr/bin/ld: grader.cpp:(.text.startup+0xfc): undefined reference to `replacement'
/usr/bin/ld: grader.cpp:(.text.startup+0x18d): undefined reference to `countReplacement'
collect2: error: ld returned 1 exit status