Submission #521415

#	Time	Username	Problem	Language	Result	Execution time	Memory
521415		Ai7081	Martian DNA (IOI16_dna)	C++17	36 / 100	14 ms	404 KiB

dna

#include <bits/stdc++.h>
using namespace std;

bool make_test(string p);

string analyse(int n, int t) {
    if (!make_test("0")) {
        string p;
        while (n--) p.append("1");
        return p;
    }
    string p = "0";
    bool res;
    while (1) {
        res = make_test(p + "0");
        if (res) {
            p.append("0");
            continue;
        }
        res = make_test(p + "1");
        if (res) {
            p.append("1");
            continue;
        }
        else break;
    }
    while (p.size() < n) {
        if (make_test("1" + p)) p = "1" + p;
        else p = "0" + p;
    }
    return p;
}

Compilation message (stderr)

dna.cpp: In function 'std::string analyse(int, int)':
dna.cpp:27:21: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   27 |     while (p.size() < n) {
      |            ~~~~~~~~~^~~
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 / 11
• Subtask 2: 25 / 25
• Subtask 3: 0 / 64