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Submission #292823

# Submission time Handle Problem Language Result Execution time Memory
292823 2020-09-07T13:51:16 Z AaronNaidu Gondola (IOI14_gondola) C++14
60 / 100
 24 ms 2816 KB 
#include <bits/stdc++.h>
#include "gondola.h"
using namespace std;

bool done[300000];
bool used[300000];
int replacedBy[300000];

int valid(int n, int inputSeq[]) {
    int minIndex = -1;
    int minAns = 1000000000;
    int maxIndex = -1;
    int maxAns = 0;
    int outOfRange = 0;
    for (int i = 0; i < n; i++)
    {
        if (done[inputSeq[i]])
        {
            return 0;
        }
        done[inputSeq[i]] = true;
        if (inputSeq[i] < minAns)
        {
            minIndex = i;
            minAns = inputSeq[i];
        }
        if (inputSeq[i] > maxAns)
        {
            maxIndex = i;
            maxAns = inputSeq[i];
        }
        if (inputSeq[i] > n)
        {
            outOfRange++;
        }
    }
    if (minAns > n)
    {
        return 1;
    }
    if (n + outOfRange != maxAns)
    {
        return 0;
    }
    for (int i = 0; i < n; i++)
    {
        if (inputSeq[i] <= n)
        {
            int diff = i - minIndex;
            if (diff <= 0)
            {
                diff += n;
            }
            int expectedAns = minAns + diff;
            if (expectedAns <= 0)
            {
                expectedAns += n;
            }
            if (expectedAns%n != inputSeq[i]%n)
            {
                return 0;
            }
        }
    }
    
    return 1;
}

int replacement(int n, int inputSeq[], int replacementSeq[]) {
    int minIndex = -1;
    int minAns = 1000000000;
    int maxIndex = -1;
    int maxAns = 0;
    int outOfRange = 0;
    for (int i = 0; i < n; i++)
    {
        if (inputSeq[i] < minAns)
        {
            minIndex = i;
            minAns = inputSeq[i];
        }
        if (inputSeq[i] > maxAns)
        {
            maxIndex = i;
            maxAns = inputSeq[i];
        }
        if (inputSeq[i] > n)
        {
            outOfRange++;
        }
        used[inputSeq[i]] = true;
    }
    if (minAns <= n)
    {
        for (int i = 0; i < n; i++)
        {
            if (inputSeq[i] > n)
            {
                int diff = i - minIndex;
                
                if (diff <= 0)
                {
                    diff += n;
                }
                int expectedAns = minAns + diff;
                if (expectedAns > n)
                {
                    expectedAns -= n;
                }
                if (expectedAns <= 0)
                {
                    expectedAns += n;
                }
                replacedBy[inputSeq[i]] = expectedAns;
            }
        }
        int currPointer = n;
        int newPointer = n;
        int l = 0;
        while (currPointer < maxAns)
        {
            if (replacedBy[newPointer])
            {
                replacementSeq[l] = replacedBy[newPointer];
                l++;
                for (int j = currPointer+1; j < newPointer; j++)
                {
                    replacementSeq[l] = j;
                    l++;
                }
                currPointer = newPointer;
            }
            newPointer++;
        }
        return l;
    }
    vector<pair<int, int> > v;
    for (int i = 0; i < n; i++)
    {
        v.push_back({inputSeq[i], i});
    }
    sort(v.begin(), v.end());
    int pointer1 = n + 1;
    int l = 0;
    for (int i = 0; i < n; i++)
    {
        replacementSeq[l] = v[i].second + 1;
        l++;
        for (int j = pointer1; j < v[i].first; j++)
        {
            replacementSeq[l] = j;
            l++;
        }
        pointer1 = v[i].first + 1;
    }
    
    return l;
}

int countReplacement(int n, int inputSeq[]) {
    int minIndex = -1;
    int minAns = 1000000000;
    int maxIndex = -1;
    int maxAns = 0;
    int outOfRange = 0;
    for (int i = 0; i < n; i++)
    {
        if (done[inputSeq[i]])
        {
            return 0;
        }
        done[inputSeq[i]] = true;
        if (inputSeq[i] < minAns)
        {
            minIndex = i;
            minAns = inputSeq[i];
        }
        if (inputSeq[i] > maxAns)
        {
            maxIndex = i;
            maxAns = inputSeq[i];
        }
        if (inputSeq[i] > n)
        {
            outOfRange++;
        }
    }
    if (minAns > n)
    {
        return 1;
    }
    if (n + outOfRange != maxAns)
    {
        return 0;
    }
    for (int i = 0; i < n; i++)
    {
        if (inputSeq[i] <= n)
        {
            int diff = i - minIndex;
            if (diff <= 0)
            {
                diff += n;
            }
            int expectedAns = minAns + diff;
            if (expectedAns <= 0)
            {
                expectedAns += n;
            }
            if (expectedAns%n != inputSeq[i]%n)
            {
                return 0;
            }
        }
    }
    
    return 1;
}

Compilation message

gondola.cpp: In function 'int valid(int, int*)':
gondola.cpp:12:9: warning: variable 'maxIndex' set but not used [-Wunused-but-set-variable]
   12 |     int maxIndex = -1;
      |         ^~~~~~~~
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:72:9: warning: variable 'maxIndex' set but not used [-Wunused-but-set-variable]
   72 |     int maxIndex = -1;
      |         ^~~~~~~~
gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:163:9: warning: variable 'maxIndex' set but not used [-Wunused-but-set-variable]
  163 |     int maxIndex = -1;
      |         ^~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 7 ms 512 KB Output is correct
7 Correct 12 ms 768 KB Output is correct
8 Correct 10 ms 640 KB Output is correct
9 Correct 3 ms 384 KB Output is correct
10 Correct 12 ms 768 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 6 ms 512 KB Output is correct
7 Correct 12 ms 896 KB Output is correct
8 Correct 10 ms 640 KB Output is correct
9 Correct 4 ms 384 KB Output is correct
10 Correct 12 ms 768 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 0 ms 384 KB Output is correct
13 Correct 6 ms 640 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 13 ms 768 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 11 ms 896 KB Output is correct
12 Correct 12 ms 768 KB Output is correct
13 Correct 14 ms 1536 KB Output is correct
14 Correct 11 ms 640 KB Output is correct
15 Correct 24 ms 2816 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct

Subtask #8
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Incorrect 0 ms 384 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #9
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Incorrect 0 ms 384 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Incorrect 1 ms 288 KB Output isn't correct
6 Halted 0 ms 0 KB -