Submission #878467

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
878467	2023-11-24T12:44:03 Z	JakobZorz	Gondola (IOI14_gondola)	C++17	Compilation error	0 ms	0 KB

gondola

#include"gondola.h"
#include<iostream>
#include<unordered_set>
using namespace std;

int valid(int n,int inputSeq[]){
    unordered_set<int>s(inputSeq,inputSeq+n);
    if(s.size()!=n)
        return 0;
    int curr=-1;
    for(int i=0;i<2*n;i++){
        if(curr==-1&&inputSeq[i%n]<=n)
            curr=inputSeq[i%n];
        
        if(inputSeq[i%n]<=n&&curr!=inputSeq[i%n])
            return 0;
        
        curr++;
        if(curr==n+1)
            curr=1;
    }
    return 1;
}

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

int replacement(int n,int gondolaSeq[],int replacementSeq[]){
    int len=0;
    int mx=0;
    for(int i=0;i<n;i++)
        mx=max(mx,gondolaSeq[i]);
    len=mx-n;
    for(int i=0;i<len;i++)
        replacementSeq[i]=0;
    
    bool present=false;
    for(int i=0;i<n;i++)
        if(gondolaSeq[i]<=n)
            present=true;
    
    if(len==0)
        return 0;
    
    
    if(present){
        int curr=-1;
        for(int i=0;i<2*n;i++){
            if(curr==-1&&gondolaSeq[i%n]<=n)
                curr=gondolaSeq[i%n];
            
            if(i>=n&&gondolaSeq[i%n]<mx&&gondolaSeq[i%n]>n){
                replacementSeq[gondolaSeq[i%n]-n-1]=curr;
            }
            
            curr++;
            if(curr==n+1)
                curr=1;
        }
        
        curr=-1;
        for(int i=0;i<2*n;i++){
            if(curr==-1&&gondolaSeq[i%n]<=n)
                curr=gondolaSeq[i%n];
            
            if(i>=n&&gondolaSeq[i%n]==mx){
                for(int i=0;i<len;i++){
                    if(replacementSeq[i]==0){
                        replacementSeq[i]=curr;
                        curr=i+n+1;
                    }
                }
                break;
            }
            
            curr++;
            if(curr==n+1)
                curr=1;
        }
    }else{
        for(int i=0;i<n;i++){
            if(gondolaSeq[i]<mx&&gondolaSeq[i]>n){
                replacementSeq[gondolaSeq[i]-n-1]=i+1;
            }
        }
        for(int i=0;i<n;i++){
            if(gondolaSeq[i]==mx){
                int curr=i+1;
                for(int i=0;i<len;i++){
                    if(replacementSeq[i]==0){
                        replacementSeq[i]=curr;
                        curr=i+n+1;
                    }
                }
            }
        }
    }
    
    return len;
}

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

const int MOD=1e9+7;
typedef long long ll;

ll powm(ll base,ll exp){
    ll res=1;
    for(int i=0;i<=30;i++){
        if(exp&(1<<i)){
            res=res*base%MOD;
        }
        base=base*base%MOD;
    }
    return res;
}

int countReplacement(int n,int inputSeq[]){
    vector<int>arr;
    if(valid(n,inputSeq)==0)
        return 0;
    
    for(int i=0;i<n;i++)
        if(inputSeq[i]>n)
            arr.push_back(inputSeq[i]);
    sort(arr.begin(),arr.end());
    ll res=1;
    int prev=n;
    for(int i=0;i<(int)arr.size();i++){
        res=res*powm(arr.size()-i,arr[i]-prev-1)%MOD;
        prev=arr[i];
    }
    return(int)res;
}

Compilation message

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:8:16: warning: comparison of integer expressions of different signedness: 'std::unordered_set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
    8 |     if(s.size()!=n)
      |        ~~~~~~~~^~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:118:5: error: 'vector' was not declared in this scope
  118 |     vector<int>arr;
      |     ^~~~~~
gondola.cpp:4:1: note: 'std::vector' is defined in header '<vector>'; did you forget to '#include <vector>'?
    3 | #include<unordered_set>
  +++ |+#include <vector>
    4 | using namespace std;
gondola.cpp:118:12: error: expected primary-expression before 'int'
  118 |     vector<int>arr;
      |            ^~~
gondola.cpp:124:13: error: 'arr' was not declared in this scope
  124 |             arr.push_back(inputSeq[i]);
      |             ^~~
gondola.cpp:125:10: error: 'arr' was not declared in this scope
  125 |     sort(arr.begin(),arr.end());
      |          ^~~
gondola.cpp:125:5: error: 'sort' was not declared in this scope; did you mean 'qsort'?
  125 |     sort(arr.begin(),arr.end());
      |     ^~~~
      |     qsort