#include<bits/stdc++.h>
//#include "gondola.h"
using namespace std;
int Can(int n, int a[]) {
sort ( a , a + n);
for (int i = 1; i < n; i ++) if ( a[i]== a[i - 1]) return 0;
return 1;
}
int valid(int n, int a[]) {
int cnt = 0, mn = n + 1, ind = 0;
if (!Can(n, a)) return 0;
for (int i = 0; i < n; i ++) {
if ( a[i] <=n) {
cnt ++;
if ( mn >= a[i]) {
mn = a[i];
ind = i;
}
}
}
if ( cnt == 0) return 1;
int last = a[ind];
cnt --;
for (int j = 0; j < n; j ++) {
if (a[ind] <= n && a[ind] > last) {
last = a[ind];
cnt --;
}
ind = (ind + 1) % n;
}
if ( cnt == 0) return 1;
return 0;
}
//----------------------
int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
return -2;
}
Compilation message
/usr/bin/ld: /tmp/ccIiMtqm.o: in function `main':
grader.cpp:(.text.startup+0xb6): undefined reference to `valid'
/usr/bin/ld: grader.cpp:(.text.startup+0x108): undefined reference to `countReplacement'
/usr/bin/ld: grader.cpp:(.text.startup+0x132): undefined reference to `replacement'
collect2: error: ld returned 1 exit status
