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Submission #152542

# Submission time Handle Problem Language Result Execution time Memory
152542 2019-09-08T10:07:36 Z Nightlight Gondola (IOI14_gondola) C++14
100 / 100
 48 ms 6224 KB 
#include "gondola.h"
#include <bits/stdc++.h>
#define MOD 1000000009;
using namespace std;

int exist[250001];
unordered_set<int> existA;

int valid(int n, int inputSeq[])
{
  int idx = 0;
  for(int i = 0; i < n; i++){
    if(exist[inputSeq[i]] == 1)return 0;
    exist[inputSeq[i]] = 1;
    if(!idx && inputSeq[i] <= n)
      idx = inputSeq[i] + 1;
    else{
      if(idx > n)idx = 1;
      if(inputSeq[i] <= n && inputSeq[i] != idx)
        return 0;
      if(idx)idx++;
    }
  }
  return 1;
}

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

int replacement(int n, int gondolaSeq[], int replacementSeq[])
{
  int idx = 0, MAX = 0, MAXid;
  for(int i = 0; i < n; i++){
    if(gondolaSeq[i] <= n){
      idx = gondolaSeq[i] - i;
      if(idx < 1) idx += n;
      break;
    }
  }
  if(!idx)idx = 1;
  for(int i = 0; i < n; i++){
    if(idx > n)idx = 1;
    if(gondolaSeq[i] > MAX){
      MAX = gondolaSeq[i];
      MAXid = idx;
    }
    if(gondolaSeq[i] > n){
      exist[gondolaSeq[i]] = idx;
//      cout << gondolaSeq[i] << " " << exist[gondolaSeq[i]] << "\n";
    }
    idx++;
  }
  if(MAX == n)return 0;
  else{
    int MAXin = 0, last = 0;
    exist[MAX] = 0;
    for(int i = n+1; i <= MAX; i++){
//      cout << i << " " << exist[i] << "\n";
      if(exist[i]){
        replacementSeq[i-n-1] = exist[i];
      }else{
        if(!MAXin){
          replacementSeq[i-n-1] = MAXid;
          MAXin = 1; 
        }else{
          replacementSeq[i-n-1] = last;
        }
        last = i;
      }
    }
  }
  return MAX - n;
}

//----------------------
vector<long long> replaced;

long long int POW( long long int a, long long int x ){
	long long res = 1;
	while(x){
    if(x&1)
      res = res * a % MOD;
    x >>= 1;
    a = a * a % MOD;
  }
  res %= MOD;
  return res;
}

int countReplacement(int n, int inputSeq[])
{
  int idx = 0;
  replaced.push_back(n);
  for(int i = 0; i < n; i++){
    if(existA.count(inputSeq[i]))
      return 0;
    existA.insert(inputSeq[i]);
    if(inputSeq[i] > n)
      replaced.push_back(inputSeq[i]);
    if(!idx && inputSeq[i] <= n){
      idx = inputSeq[i] + 1;
    }else{
      if(idx > n)idx = 1;
      if(inputSeq[i] <= n && inputSeq[i] != idx)
        return 0;
      if(idx)idx++;
    }
  }
  sort(replaced.begin() + 1, replaced.end());
  long long ans = (idx ? 1 : n);
  for(int i = 1; i < replaced.size(); i++){
    ans *= POW(replaced.size() - i,replaced[i] - replaced[i-1] - 1);
    ans %= MOD;
  }
  return ans;
}

Compilation message

gondola.cpp: In function 'int countReplacement(int, int*)':
gondola.cpp:110:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = 1; i < replaced.size(); i++){
                  ~~^~~~~~~~~~~~~~~~~
gondola.cpp: In function 'int replacement(int, int*, int*)':
gondola.cpp:62:33: warning: 'MAXid' may be used uninitialized in this function [-Wmaybe-uninitialized]
           replacementSeq[i-n-1] = MAXid;
           ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 9 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 4 ms 376 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 7 ms 632 KB Output is correct
7 Correct 13 ms 632 KB Output is correct
8 Correct 11 ms 892 KB Output is correct
9 Correct 5 ms 500 KB Output is correct
10 Correct 13 ms 1016 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 7 ms 632 KB Output is correct
7 Correct 13 ms 632 KB Output is correct
8 Correct 12 ms 888 KB Output is correct
9 Correct 5 ms 504 KB Output is correct
10 Correct 12 ms 1016 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 8 ms 760 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 14 ms 760 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 3 ms 376 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 11 ms 636 KB Output is correct
12 Correct 13 ms 632 KB Output is correct
13 Correct 15 ms 1528 KB Output is correct
14 Correct 11 ms 632 KB Output is correct
15 Correct 22 ms 2680 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct

Subtask #8
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 256 KB Output is correct

Subtask #9
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 3 ms 380 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 38 ms 4224 KB Output is correct
10 Correct 31 ms 4176 KB Output is correct
11 Correct 3 ms 1652 KB Output is correct
12 Correct 15 ms 2296 KB Output is correct
13 Correct 5 ms 888 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 35 ms 4220 KB Output is correct
10 Correct 29 ms 4128 KB Output is correct
11 Correct 12 ms 1652 KB Output is correct
12 Correct 15 ms 2296 KB Output is correct
13 Correct 5 ms 760 KB Output is correct
14 Correct 44 ms 5624 KB Output is correct
15 Correct 48 ms 6224 KB Output is correct
16 Correct 11 ms 1528 KB Output is correct
17 Correct 33 ms 4608 KB Output is correct
18 Correct 20 ms 2852 KB Output is correct