Submission #274554

#	Time	Username	Problem	Language	Result	Execution time	Memory
274554		faresbasbs	Gondola (IOI14_gondola)	C++14	20 / 100	45 ms	5740 KiB

gondola

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

int valid(int n, int a[]){
	vector<pair<int,int>> v;
	for(int i = 0 ; i < n ; i += 1){
		if(a[i] <= n){
			v.push_back({a[i],i});
		}
	}
	sort(v.begin(),v.end());
	for(int i = 1 ; i < v.size() ; i += 1){
		int diff1 = v[i].first-v[i-1].first , diff2;
		if(v[i].second > v[i-1].second){
			diff2 = v[i].second-v[i-1].second;
		}else{
			diff2 = n-v[i-1].second+v[i].second;
		}
		if(diff1 != diff2){
			return 0;
		}
	}
	set<int> st;
	for(int i = 0 ; i < n ; i += 1){
		if(st.count(a[i])){
			return 0;
		}
		st.insert(a[i]);
	}
	return 1;
}

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

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

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

int countReplacement(int n, int inputSeq[]){
  	return -3;
}

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:13:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |  for(int i = 1 ; i < v.size() ; i += 1){
      |                  ~~^~~~~~~~~~

• 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