oj.uz

Submission #409903

# Submission time Handle Problem Language Result Execution time Memory
409903 2021-05-21T18:51:04 Z Alma Martian DNA (IOI16_dna) C++17
0 / 100
 14 ms 380 KB 
#include <bits/stdc++.h>
#include "dna.h"
using namespace std;

string analyse(int n, int t) {
    string z = "", o = "";
    for (int i = 0; i < n; i++) {
        z += '0'; o += '1';
    }
    if (!make_test("0")) return o;

    string p;
    int lo = 1, mid, max0 = n, hi = n;
    while (lo <= hi) {
        mid = (lo+hi) / 2;
        p = z.substr(0, mid);
        if (make_test(p)) {
            max0 = mid;
            lo = mid+1;
        } else {
            hi = mid-1;
        }
    }
    p = z.substr(0, max0);
    int l = max0, r = max0;
    while ((int)p.size() < n) {
        if (r >= max0) {
            if (make_test(p + '1')) {
                p += '1'; r = 0;
            } else break;
        } else {
            p += '0'; r++;
        }
    }
    int rest;
    string s;
    lo = max0; hi = (int)p.size();
    while (lo <= hi) {
        mid = (lo+hi) / 2;
        s = p.substr(0, mid);
        if (make_test(s)) {
            rest = mid;
            lo = mid+1;
        } else {
            hi = mid-1;
        }
    }
    s = p.substr(0, rest);
    for (int i = rest; i < n; i++) {
        if (l >= max0 || make_test('1' + s)) {
            s = '1' + s; l = 0;
        } else {
            s = '0' + s; l++;
        }
    }
    return s;
}

Compilation message

dna.cpp: In function 'std::string analyse(int, int)':
dna.cpp:48:25: warning: 'rest' may be used uninitialized in this function [-Wmaybe-uninitialized]
   48 |     s = p.substr(0, rest);
      |                         ^
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
0 / 11.0

# 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 204 KB Output is correct
7 Correct 1 ms 204 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 204 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 Incorrect 1 ms 204 KB Wrong DNA
17 Correct 1 ms 204 KB Output is correct
18 Incorrect 1 ms 204 KB Wrong DNA
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Incorrect 1 ms 204 KB Wrong DNA
24 Correct 1 ms 204 KB Output is correct

Subtask #2
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 204 KB Output is correct
7 Incorrect 1 ms 204 KB Wrong DNA
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 232 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Incorrect 1 ms 204 KB Wrong DNA
13 Incorrect 1 ms 256 KB Wrong DNA
14 Correct 2 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 Incorrect 1 ms 204 KB Wrong DNA
18 Incorrect 1 ms 204 KB Wrong DNA
19 Incorrect 1 ms 204 KB Wrong DNA
20 Incorrect 1 ms 204 KB Wrong DNA
21 Incorrect 1 ms 204 KB Wrong DNA
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Incorrect 1 ms 204 KB Wrong DNA
27 Correct 1 ms 204 KB Output is correct
28 Incorrect 1 ms 204 KB Wrong DNA
29 Incorrect 1 ms 204 KB Wrong DNA
30 Incorrect 1 ms 204 KB Wrong DNA
31 Incorrect 1 ms 204 KB Wrong DNA
32 Incorrect 1 ms 204 KB Wrong DNA
33 Incorrect 1 ms 204 KB Wrong DNA
34 Correct 1 ms 204 KB Output is correct

Subtask #3
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 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 204 KB Output is correct
7 Incorrect 1 ms 204 KB Wrong DNA
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Incorrect 1 ms 204 KB Wrong DNA
13 Incorrect 1 ms 204 KB Wrong DNA
14 Incorrect 1 ms 204 KB Wrong DNA
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Incorrect 1 ms 204 KB Wrong DNA
18 Incorrect 1 ms 204 KB Wrong DNA
19 Incorrect 1 ms 204 KB Wrong DNA
20 Incorrect 1 ms 204 KB Wrong DNA
21 Incorrect 1 ms 204 KB Wrong DNA
22 Incorrect 10 ms 332 KB Wrong DNA
23 Incorrect 11 ms 332 KB Wrong DNA
24 Incorrect 13 ms 340 KB Wrong DNA
25 Incorrect 14 ms 316 KB Wrong DNA
26 Incorrect 13 ms 332 KB Wrong DNA
27 Correct 3 ms 380 KB Output is correct
28 Correct 3 ms 332 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Incorrect 6 ms 372 KB Wrong DNA
32 Correct 1 ms 204 KB Output is correct
33 Incorrect 8 ms 332 KB Wrong DNA
34 Incorrect 8 ms 364 KB Wrong DNA
35 Incorrect 7 ms 332 KB Wrong DNA
36 Incorrect 9 ms 332 KB Wrong DNA
37 Incorrect 8 ms 332 KB Wrong DNA
38 Incorrect 6 ms 332 KB Wrong DNA
39 Correct 5 ms 332 KB Output is correct