oj.uz

Submission #409907

# Submission time Handle Problem Language Result Execution time Memory
409907 2021-05-21T18:56:19 Z Alma Martian DNA (IOI16_dna) C++17
100 / 100
 14 ms 404 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 (r <= max0) {
        if (make_test(p + '1')) {
            p += '1'; r = 0;
        } else {
            p += '0'; r++;
        }
    }
    int rest;
    string s;
    lo = max0; hi = n;
    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:46:25: warning: 'rest' may be used uninitialized in this function [-Wmaybe-uninitialized]
   46 |     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
11.0 / 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 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 204 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 204 KB Output is correct
24 Correct 1 ms 204 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 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 280 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 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 204 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 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 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 204 KB Output is correct
34 Correct 1 ms 204 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 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 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 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 10 ms 332 KB Output is correct
23 Correct 11 ms 332 KB Output is correct
24 Correct 10 ms 332 KB Output is correct
25 Correct 14 ms 404 KB Output is correct
26 Correct 13 ms 332 KB Output is correct
27 Correct 7 ms 372 KB Output is correct
28 Correct 7 ms 368 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 7 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 10 ms 332 KB Output is correct
34 Correct 9 ms 308 KB Output is correct
35 Correct 8 ms 332 KB Output is correct
36 Correct 9 ms 388 KB Output is correct
37 Correct 8 ms 332 KB Output is correct
38 Correct 11 ms 356 KB Output is correct
39 Correct 6 ms 332 KB Output is correct