oj.uz

Submission #526143

# Submission time Handle Problem Language Result Execution time Memory
526143 2022-02-13T20:09:49 Z fakhoury Martian DNA (IOI16_dna) C++14
100 / 100
 11 ms 416 KB 
#include "dna.h"

#include <iostream>
#include <cstdlib>
#include <string>
#include <algorithm>

using namespace std;

string analyse(int n, int t) {
    srand(2139);

    string known, cur;
    bool flipped = false;

    auto merge = [](string& a, string b, bool flipped) {
        if (flipped) {
            reverse(b.begin(), b.end());
            return b + a;
        }
        return a + b;
    };

    auto correct = [&]() {
        if (flipped) {
            known = merge(known, cur, flipped);
            cur.clear();
            return;
        }

        int lo = 0, hi = (int) cur.size(), mi;
        while(lo < hi) {
            mi = (lo + hi + 1) / 2;
            if (make_test(merge(known, cur.substr(0, mi), flipped)))
                lo = mi;
            else hi = mi - 1;
        }
        known = merge(known, cur.substr(0, lo), flipped);
        cur.clear();
        flipped = true;
    };

    while((int) known.size() < n) {
        cur += rand()%2 + '0';
        if (make_test(merge(known, cur, flipped))) {
            known = merge(known, cur, flipped);
            cur.clear();
        } else {
            cur.back() ^= '0' ^ '1';
        }
        if (cur.size() == 16u || (int) known.size() + (int) cur.size() == n) {
            correct();
        }
    }

    return known;
}

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()) {

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 272 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 292 KB Output is correct
5 Correct 1 ms 292 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 272 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 2 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 2 ms 292 KB Output is correct
15 Correct 0 ms 292 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 292 KB Output is correct
18 Correct 2 ms 296 KB Output is correct
19 Correct 2 ms 292 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 0 ms 284 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 272 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 1 ms 292 KB Output is correct
10 Correct 1 ms 288 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 292 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 292 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 292 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 1 ms 284 KB Output is correct
34 Correct 1 ms 284 KB Output is correct

Subtask #3
64.0 / 64.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 292 KB Output is correct
7 Correct 1 ms 288 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 296 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 292 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 296 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 300 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 10 ms 416 KB Output is correct
23 Correct 8 ms 296 KB Output is correct
24 Correct 11 ms 336 KB Output is correct
25 Correct 10 ms 404 KB Output is correct
26 Correct 11 ms 368 KB Output is correct
27 Correct 6 ms 288 KB Output is correct
28 Correct 5 ms 324 KB Output is correct
29 Correct 6 ms 332 KB Output is correct
30 Correct 7 ms 408 KB Output is correct
31 Correct 7 ms 332 KB Output is correct
32 Correct 6 ms 336 KB Output is correct
33 Correct 7 ms 304 KB Output is correct
34 Correct 8 ms 288 KB Output is correct
35 Correct 7 ms 412 KB Output is correct
36 Correct 7 ms 292 KB Output is correct
37 Correct 7 ms 336 KB Output is correct
38 Correct 8 ms 288 KB Output is correct
39 Correct 8 ms 336 KB Output is correct