Submission #160968

#	Time	Username	Problem	Language	Result	Execution time	Memory
160968		InfiniteJest	Gondola (IOI14_gondola)	C++14	45 / 100	23 ms	2400 KiB

gondola

#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
#include <algorithm>
#include <math.h>
#include "gondola.h"
#define pb push_back
#define mp make_pair
#define fi first
#define se second
using namespace std;

int valid(int n, int inputSeq[]){
  int ans=1;
  bool pres[300001];
  for(int i=0;i<n;i++){
    if(inputSeq[i]<=n){
      int val=inputSeq[i];
      for(int y=0;y<n;y++){
        if(inputSeq[(i+y)%n]<=n&&inputSeq[(i+y)%n]!=val||pres[inputSeq[(i+y)%n]]){
          ans=0;
          break;
        }
        val++;
        if(val==n+1)val=1;
        pres[inputSeq[(i+y)%n]]=1;
      }
      break;
    }
  }
  return ans;
}


int replacement(int n, int gondolaSeq[], int replacementSeq[]){
    bool flag=0;
    vector<pair<int,int> > p;
    int ind=-1,val;
    for(int i=0;i<n;i++){
      if(gondolaSeq[i]<=n){
        ind=i;
        val=gondolaSeq[i];
      }
      else flag=1;
    }
    if(!flag)return 0;
    if(ind==-1){
      ind=0;
      val=1;
    }
    for(int i=0;i<n;i++){
      if(gondolaSeq[(ind+i)%n]>n){
        p.pb(mp(gondolaSeq[(ind+i)%n],val));
      }
      val++;
      if(val==n+1)val=1;
    }
    sort(p.begin(),p.end());
    int cur=n+1;
    int indtot=0;
    for(int i=0;i<p.size();i++){
      replacementSeq[indtot++]=p[i].se;
      for(;cur<p[i].fi;cur++)replacementSeq[indtot++]=cur;
      cur=p[i].fi+1;
    }
  return indtot;
}

int countReplacement(int n, int inputSeq[]){
  return 0;
}

Compilation message (stderr)

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:21:32: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
         if(inputSeq[(i+y)%n]<=n&&inputSeq[(i+y)%n]!=val||pres[inputSeq[(i+y)%n]]){
            ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:62:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<p.size();i++){
                 ~^~~~~~~~~
gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:21:80: warning: 'pres[<unknown>]' may be used uninitialized in this function [-Wmaybe-uninitialized]
         if(inputSeq[(i+y)%n]<=n&&inputSeq[(i+y)%n]!=val||pres[inputSeq[(i+y)%n]]){
                                                          ~~~~~~~~~~~~~~~~~~~~~~^
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:56:10: warning: 'val' may be used uninitialized in this function [-Wmaybe-uninitialized]
       val++;
       ~~~^~

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