Submission #285527

#	Time	Username	Problem	Language	Result	Execution time	Memory
285527		emanIaicepsa	Gondola (IOI14_gondola)	C++14	25 / 100	15 ms	640 KiB

gondola

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

int valid(int n, int inputSeq[]){
	for(int i=0;i<n;i++) inputSeq[i]--;
	vector<bool> used(250000);
	int pos0 = -1;
	for(int i=0;i<n;i++){
		if(inputSeq[i] < n) pos0 = (i - inputSeq[i] + n) % n;
		if(used[inputSeq[i]]) return 0;
		used[inputSeq[i]] = 1;
	}
	if(pos0 == -1) return 1;
	for(int i=0;i<n;i++){
		if(inputSeq[i] < n){
			if((pos0 + inputSeq[i]) % n != i) return 0;
		}
	}
	return 1;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[]){
	vector<bool> used(250000);
	int mx = 0;
	for(int i=0;i<n;i++) gondolaSeq[i]--, used[gondolaSeq[i]] = 1, mx = max(mx, gondolaSeq[i]);
	int pos0 = -1, ans = 0;
	for(int i=0;i<n;i++){
		if(gondolaSeq[i] < n) pos0 = (i - gondolaSeq[i] + n) % n;
	}
	for(int i=0;i<mx;i++) if(!used[i]) replacementSeq[ans++] = i+1;
	return ans;
}

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

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

Compilation message (stderr)

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:29:6: warning: variable 'pos0' set but not used [-Wunused-but-set-variable]
   29 |  int pos0 = -1, ans = 0;
      |      ^~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 5 / 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