Submission #592821

# Submission time Handle Problem Language Result Execution time Memory
592821 2022-07-09T16:14:47 Z tarche Martian DNA (IOI16_dna) C++17
0 / 100
13 ms 388 KB
#include "dna.h"

#include <bits/stdc++.h>

using namespace std;

int lengthLongestZeroChain(int n) {
  int low = 0, high = n;
  while (low + 1 < high) {
    int mid = (low + high) / 2;
    string s(mid, '0');
    if (make_test(s)) {
      low = mid;
    } else {
      high = mid;
    }
  }

  return low;
}

void findStringEnding(string& s, string& chain) {
  int n = (int)chain.length();
  int low = 0, high = n;
  while (low + 1 < high) {
    int mid = (low + high) / 2;
    chain = string(mid, '0');
    if (make_test(s + chain)) {
      low = mid;
    } else {
      high = mid;
    }
  }

  s += string(low, '0');
}

void growSubstringRight(string& s, string& chain) {
  if (make_test(s + chain + '1')) {
    s += chain + '1';
    chain = "";
  } else {
    chain += '0';
  }
}

void growSubstringLeft(string& s) {
  if (make_test('1' + s)) {
    s = "1" + s;
  } else {
    s = "0" + s;
  }
}

string analyse(int n, int t) {
  int zeroChainLen = lengthLongestZeroChain(n);
  string curr(zeroChainLen, '0'), chain = "";
  while ((int)chain.length() < zeroChainLen && (int)curr.length() < n) {
    growSubstringRight(curr, chain);
  }

  if ((int)chain.length() == zeroChainLen) {
    findStringEnding(curr, chain);
  }

  while ((int)curr.length() < n) {
    growSubstringLeft(curr);
  }

  return curr;
}

Compilation message

grader.cpp: In function 'bool make_test(std::string)':
grader.cpp:14:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |  for (int i = 0; i < p.size(); i++) {
      |                  ~~^~~~~~~~~~
grader.cpp:23:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |  for (int i = 1; i <= ss.size(); i++) {
      |                  ~~^~~~~~~~~~~~
grader.cpp:28:13: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   if (pr[i] == p.size()) {
# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 304 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Incorrect 1 ms 308 KB Wrong DNA
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Incorrect 0 ms 212 KB Wrong DNA
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 304 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Incorrect 1 ms 212 KB Wrong DNA
19 Incorrect 1 ms 212 KB Wrong DNA
20 Correct 1 ms 212 KB Output is correct
21 Incorrect 1 ms 212 KB Wrong DNA
22 Correct 1 ms 212 KB Output is correct
23 Incorrect 0 ms 212 KB Wrong DNA
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Incorrect 1 ms 212 KB Wrong DNA
30 Incorrect 1 ms 212 KB Wrong DNA
31 Incorrect 1 ms 212 KB Wrong DNA
32 Correct 1 ms 308 KB Output is correct
33 Correct 1 ms 304 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 300 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 300 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Incorrect 1 ms 308 KB Wrong DNA
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 300 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 304 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 308 KB Output is correct
19 Correct 1 ms 296 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Incorrect 1 ms 300 KB Wrong DNA
22 Correct 8 ms 304 KB Output is correct
23 Incorrect 9 ms 364 KB Wrong DNA
24 Incorrect 9 ms 304 KB Wrong DNA
25 Correct 12 ms 364 KB Output is correct
26 Correct 13 ms 340 KB Output is correct
27 Correct 6 ms 352 KB Output is correct
28 Incorrect 7 ms 388 KB Wrong DNA
29 Correct 12 ms 340 KB Output is correct
30 Correct 6 ms 308 KB Output is correct
31 Correct 5 ms 340 KB Output is correct
32 Correct 12 ms 304 KB Output is correct
33 Correct 8 ms 304 KB Output is correct
34 Correct 8 ms 340 KB Output is correct
35 Correct 7 ms 340 KB Output is correct
36 Incorrect 7 ms 340 KB Wrong DNA
37 Incorrect 7 ms 308 KB Wrong DNA
38 Correct 4 ms 340 KB Output is correct
39 Correct 9 ms 352 KB Output is correct