Submission #392161

#	Time	Username	Problem	Language	Result	Execution time	Memory
392161		rainboy	Gondola (IOI14_gondola)	C11	Compilation error	0 ms	0 KiB

gondola

#include "gondola.h"
#include <stdio.h>
#include <string.h>

#define A	250000
#define MD	1000000009

int max(int a, int b) { return a > b ? a : b; }

int valid(int n, int aa[]) {
	static char used[A + 1];
	int i, j;

	for (i = 0; i < n; i++) {
		if (used[aa[i]])
			return 0;
		used[aa[i]] = 1;
	}
	for (i = 0; i < n; i++)
		if (aa[i] <= n) {
			for (j = 0; j < n; j++)
				if (aa[(i + j) % n] <= n && aa[(i + j) % n] != (aa[i] - 1 + j) % n + 1)
					return 0;
			return 1;
		}
  return 1;
}

int replacement(int n, int aa[], int bb[]) {
	static int ii[A + 1];
	int i, a, a_, b, offset;

	memset(ii, -1, (A + 1) * sizeof *ii);
	offset = 0;
	for (i = 0, a_ = -1; i < n; i++) {
		ii[aa[i]] = i, a_ = max(a_, aa[i]);
		if (aa[i] <= n)
			offset = (aa[i] - 1 - i + n) % n;
	}
	for (a = n + 1, b = (ii[a_] + offset) % n + 1; a <= a_; a++)
		if (a < a_ && ii[a] != -1)
			bb[a - n - 1] = (ii[a] + offset) % n + 1;
		else
			bb[a - n - 1] = b, b = a;
  return a_ - n;
}

int countReplacement(int n, int aa[]) {
	static char used[A + 1];
	int i, a, a_, k, ans;

	if (!valid(n, aa))
		return 0;
	a_ = 0;
	for (i = 0; i < n; i++)
		used[aa[i]] = 1, a_ = max(a_, aa[i]);
	k = 0, ans = 1;
	for (a = a_; a > n; a--)
		if (used[a])
			k++;
		else
			ans = (long long) ans * k % MD;
  return ans;
}

Compilation message (stderr)

grader.c: In function 'main':
grader.c:37:1: error: a label can only be part of a statement and a declaration is not a statement
   37 | int ans =(  countReplacement(n, gondolaSequence));
      | ^~~