Submission #1010436

#	Time	Username	Problem	Language	Result	Execution time	Memory
1010436		Mardonbekhazratov	Gondola (IOI14_gondola)	C++17	25 / 100	29 ms	5200 KiB

gondola

#include "gondola.h"
#include<bits/stdc++.h>

using namespace std;

int valid(int n, int inputSeq[]){
    int mn=n,id=-1;
    map<int,int>cnt;
    for(int i=0;i<n;i++){
        cnt[inputSeq[i]]++;
        if(inputSeq[i]<=mn){
            mn=inputSeq[i];
            id=i;
        }
    }
    for(auto [x,y]:cnt){
        if(y>1) return 0;
    }
    if(mn==n) return 1;
    id=(id-mn+1+n)%n;
    for(int i=0;i<n;i++){
        if(inputSeq[(id+i)%n]==i+1 || inputSeq[(id+i)%n]>n) continue;
        return 0;
    }
    return 1;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[]){
    const int N=2.5e5;
    vector<int>cnt(N+1,0);
    int mn=N,id=-1,mx=0;
    set<int>s;
    for(int i=0;i<n;i++){
        cnt[gondolaSeq[i]]++;
        if(gondolaSeq[i]<mn){
            mn=gondolaSeq[i];
            id=i;
        }
        mx=max(mx,gondolaSeq[i]);
        if(gondolaSeq[i]<=n) s.insert(gondolaSeq[i]);
    }
    int ans=0,c=1;
    bool ok=false;
    for(int i=n+1;i<=mx;i++){
        while(s.find(c)!=s.end()) c++;
        if(!ok) replacementSeq[ans++]=c++;
        if(cnt[i]){
            ok=false;
        }
        else{
            ok=true;
            replacementSeq[ans++]=i;
        }
    }
    return ans;
}

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

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

Compilation message (stderr)

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:33:14: warning: variable 'id' set but not used [-Wunused-but-set-variable]
   33 |     int mn=N,id=-1,mx=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