Submission #254517

#	Time	Username	Problem	Language	Result	Execution time	Memory
254517		b00n0rp	Gondola (IOI14_gondola)	C++17	20 / 100	41 ms	4736 KiB

gondola

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

#define ll long long

int valid(int n, int inputSeq[]){
	int mx = inputSeq[0],mn = inputSeq[0];
	for(int i = 1; i < n; i ++){
		mx = max(mx,inputSeq[i]);
		mn = min(mn,inputSeq[i]);
	}
	set<int> s;
	for(int i = 0; i < n; i ++){
		s.insert(inputSeq[i]);
	}
	if(s.size() != n) return 0;
	if(mn > n) return 1;
	for(int i = 0; i < n; i ++){
		if(inputSeq[i] <= n){
			for(int j = i+1; j != i; j = (j+1)%n){
				if(inputSeq[j] > n) continue;
				if(inputSeq[j] != ((inputSeq[i]+(j-i)+n-1)%n)+1) return 0;
			}
			return 1;
		}
	}
}

//----------------------

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
  return -2;
}

//----------------------

const ll MOD = 1000000009;

int countReplacement(int n, int inputSeq[]){
	int mx = inputSeq[0],mn = inputSeq[0];
	for(int i = 1; i < n; i ++){
		mx = max(mx,inputSeq[i]);
		mn = min(mn,inputSeq[i]);
	}
	if(mn > n){
		ll ans = 1;
		for(int i = 1; i <= n; i ++){
			ans = (ans*i)%MOD;
		}
		return ans;
	}
	else assert(0 == 1);
}

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:17:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(s.size() != n) return 0;
     ~~~~~~~~~^~~~
gondola.cpp:28:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 0 / 5
• Subtask 5: 0 / 10
• Subtask 6: 0 / 20
• Subtask 7: 0 / 5
• Subtask 8: 0 / 15
• Subtask 9: 0 / 15
• Subtask 10: 0 / 10