Submission #1010460

#	Time	Username	Problem	Language	Result	Execution time	Memory
1010460		Mardonbekhazratov	Gondola (IOI14_gondola)	C++17	55 / 100	34 ms	6268 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=0,mx=0;
    set<int>s;
    set<pair<int,int>>t;
    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]);
        else t.insert({gondolaSeq[i],i});
    }
    if(mn<=n){
        id=(id-mn+1+n)%n;
    }
    int ans=0,last=n+1;
    for(auto [x,y]:t){
        int k=(y-id+n)%n;
        replacementSeq[ans++]=k+1;
        for(int j=last;j<x;j++) replacementSeq[ans++]=j;
        last=x+1;
    }
    return ans;
}

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

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

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