제출 #309257

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
309257		daniel920712	곤돌라 (IOI14_gondola)	C++14	25 / 100	15 ms	1408 KiB

gondola

#include "gondola.h"
#include <vector>
#include <algorithm>
#include <set>
using namespace std;
int con[250005]={0};
int all[100005];
set < int > have;
vector < pair < int , int > > how ;
int valid(int n, int inputSeq[])
{
    int what,ok=1,i;
    for(i=1;i<=n;i++) all[i]=1e9;
    for(i=0;i<n;i++)
    {

        con[inputSeq[i]]++;
        if(con[inputSeq[i]]>=2) ok=0;
        if(inputSeq[i]>n) continue;
        all[inputSeq[i]]=(inputSeq[i]-i+n)%n;
        what=(inputSeq[i]-i+n)%n;
    }
    for(i=1;i<=n;i++) if(all[i]!=1000000000&&all[i]!=what) ok=0;
    return ok;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
    int now=0,con=0,where=0,big=0,t,i;
    for(i=0;i<n;i++)
    {
        if(gondolaSeq[i]>n) con++;
        else where=i;
        big=max(big,gondolaSeq[i]);
    }
    for(i=1;i<=big;i++) have.insert(i);
    for(i=0;i<n;i++)
    {
        have.erase(gondolaSeq[(where+i)%n]);
        if(gondolaSeq[(where+i)%n]>n&&gondolaSeq[(where+i)%n]<=n+con)
        {
            t=(gondolaSeq[where]+i)%n;
            if(t==0) t=n;
            how.push_back(make_pair(gondolaSeq[(where+i)%n],t));
            have.erase(t);
        }
    }
    for(i=0;i<n;i++)
    {
        have.erase(gondolaSeq[(where+i)%n]);
        if(gondolaSeq[(where+i)%n]>n&&gondolaSeq[(where+i)%n]>n+con)
        {
            t=(gondolaSeq[where]+i)%n;
            if(t==0) t=n;
            how.push_back(make_pair(*have.begin(),t));
            have.erase(have.begin());
        }
    }
    sort(how.begin(),how.end());
    for(auto i:how) replacementSeq[now++]=i.second;
    for(auto i:have) replacementSeq[now++]=i;
    return now;


}

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

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

컴파일 시 표준 에러 (stderr) 메시지

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:23:44: warning: 'what' may be used uninitialized in this function [-Wmaybe-uninitialized]
   23 |     for(i=1;i<=n;i++) if(all[i]!=1000000000&&all[i]!=what) ok=0;
      |                          ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~

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