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Submission #1017837

# Submission time Handle Problem Language Result Execution time Memory
1017837 2024-07-09T10:36:51 Z simona1230 Gondola (IOI14_gondola) C++17
75 / 100
 51 ms 9820 KB 
#include "gondola.h"
#include <bits/stdc++.h>
using namespace std;
const long long mod=1e9+9;

long long mult(long long x,long long p)
{
    if(p==0)return 1;
    if(p==1)return x;
    long long half=mult(x,p/2);
    if(p%2==0)return (half*half)%mod;
    return (((half*half)%mod)*x)%mod;
}
int n;
long long a[250001];
map<long long,long long> mp;
bool check()
{
    mp.clear();
    long long idx=-1;
    for(int i=0; i<n; i++)
    {
        if(mp[a[i]])return 0;
        mp[a[i]]++;
        if(a[i]<=n)
        {
            idx=i;
        }
    }
    if(idx==-1)return 1;

    long long curr=a[idx];
    for(int i=idx; i<n; i++)
    {
        if(a[i]<=n&&a[i]!=curr)return 0;
        curr++;
        if(curr==n+1)curr=1;
    }

    for(int i=0; i<idx; i++)
    {
        if(a[i]<=n&&a[i]!=curr)return 0;
        curr++;
        if(curr==n+1)curr=1;
    }
    return 1;
}

int valid(int N, int inputSeq[])
{
    n=N;
    for(int i=0; i<n; i++)
        a[i]=inputSeq[i];
    //cout<<check()<<endl;
    return check();
}

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


int req[250001];
void needed()
{
    int idx=-1;
    for(int i=0; i<n; i++)
    {
        if(a[i]<=n)
        {
            idx=i;
        }
    }
    if(idx==-1)
    {
        for(int i=0; i<n; i++)
            req[i]=i+1;
        return;
    }

    int curr=a[idx];
    for(int i=idx; i<n; i++)
    {
        req[i]=curr;
        curr++;
        if(curr==n+1)curr=1;
    }

    for(int i=0; i<idx; i++)
    {
        req[i]=curr;
        curr++;
        if(curr==n+1)curr=1;
    }
}

bool cmp(int i,int j)
{
    return a[i]<a[j];
}

int replacement(int N, int gondolaSeq[], int replacementSeq[])
{
    n=N;
    for(int i=0; i<n; i++)
        a[i]=gondolaSeq[i];
    needed();
    vector<int> v;
    for(int i=0; i<n; i++)
    {
        if(a[i]!=req[i])v.push_back(i);
    }
    sort(v.begin(),v.end(),cmp);

    /*for(int i=0;i<n;i++)
        cout<<req[i]<<" ";
    cout<<endl;*/
    int all=n+1;
    int cnt=0;
    for(int i=0; i<v.size(); i++)
    {
        int idx=v[i];
        //cout<<req[idx]<<endl;
        while(req[idx]!=a[idx])
        {
            replacementSeq[cnt++]=req[idx];
            req[idx]=all++;
        }
    }
    return cnt;
}

//----------------------
int countReplacement(int N, int inputSeq[])
{
    n=N;
    for(int i=0; i<n; i++)
        a[i]=inputSeq[i];
    if(check()==0)return 0;
    needed();
    vector<long long> v;
    mp.clear();
    long long maxx=n+1;
    for(int i=0; i<n; i++)
    {
        mp[a[i]]=i;
        maxx=min(maxx,a[i]);
        if(a[i]!=req[i])v.push_back(i);
        if(req[i]==n)mp[n]=i;
    }
    sort(v.begin(),v.end(),cmp);
    long long ans=1;
    long long last=n;
    for(int i=0; i<v.size(); i++)
    {
        long long pos=v.size()-i;
        long long cnt=a[v[i]]-last-1;
        //cout<<last<<" "<<a[v[i]]<<" "<<pos<<" "<<cnt<<endl;
        ans=(ans*mult(pos,cnt))%mod;
        last=a[v[i]];
    }

    if(v.size()==n)
    {
        for(int i=1; i<=n; i++)
        {
            ans=(ans*i)%mod;
        }
    }

    return (int)ans;
}

Compilation message

gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:118:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  118 |     for(int i=0; i<v.size(); i++)
      |                  ~^~~~~~~~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:152:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  152 |     for(int i=0; i<v.size(); i++)
      |                  ~^~~~~~~~~
gondola.cpp:161:16: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  161 |     if(v.size()==n)
      |        ~~~~~~~~^~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 0 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4696 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 11 ms 6836 KB Output is correct
7 Correct 7 ms 4444 KB Output is correct
8 Correct 22 ms 8976 KB Output is correct
9 Correct 6 ms 5724 KB Output is correct
10 Correct 25 ms 9736 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4532 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4536 KB Output is correct
6 Correct 13 ms 6848 KB Output is correct
7 Correct 9 ms 4444 KB Output is correct
8 Correct 21 ms 8904 KB Output is correct
9 Correct 6 ms 5724 KB Output is correct
10 Correct 25 ms 9636 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 15 ms 6648 KB Output is correct
14 Correct 1 ms 4440 KB Output is correct
15 Correct 32 ms 9820 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 0 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4440 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 0 ms 4444 KB Output is correct
6 Correct 1 ms 4440 KB Output is correct
7 Correct 1 ms 4440 KB Output is correct
8 Correct 1 ms 4440 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 0 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 0 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 7 ms 4544 KB Output is correct
12 Correct 6 ms 4516 KB Output is correct
13 Correct 10 ms 5092 KB Output is correct
14 Correct 6 ms 4700 KB Output is correct
15 Correct 13 ms 5656 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4440 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct

Subtask #9
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4440 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 51 ms 9756 KB Output is correct
10 Correct 38 ms 8796 KB Output is correct
11 Correct 14 ms 6236 KB Output is correct
12 Correct 18 ms 6488 KB Output is correct
13 Incorrect 4 ms 4956 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4544 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4440 KB Output is correct
6 Correct 1 ms 4440 KB Output is correct
7 Correct 1 ms 4440 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 51 ms 9796 KB Output is correct
10 Correct 46 ms 8768 KB Output is correct
11 Correct 15 ms 6232 KB Output is correct
12 Correct 18 ms 6492 KB Output is correct
13 Incorrect 4 ms 4956 KB Output isn't correct
14 Halted 0 ms 0 KB -