Submission #731594

#	Time	Username	Problem	Language	Result	Execution time	Memory
731594		abcvuitunggio	Martian DNA (IOI16_dna)	C++17	100 / 100	13 ms	596 KiB

dna

#include "dna.h"
#include <cstdlib>
#include <bits/stdc++.h>
using namespace std;
string analyse(int n, int t) {
    int l=0,r=n,kq=-1;
    string s;
    while (l<=r){
        int mid=(l+r)>>1;
        string s2;
        for (int i=0;i<mid;i++)
            s2+='0';
        if (make_test(s2)){
            kq=mid;
            l=mid+1;
        }
        else
            r=mid-1;
    }
    for (int i=0;i<kq;i++)
        s+='0';
    int cnt=0;
    while (s.length()<n){
        if (make_test(s+'1')){
            s+='1';
            cnt=0;
            continue;
        }
        s+='0';
        cnt++;
        if (cnt>kq)
            break;
    }
    l=1,r=s.length(),kq=-1;
    while (l<=r){
        int mid=(l+r)>>1;
        string s2;
        for (int i=0;i<mid;i++)
            s2+=s[i];
        if (make_test(s2)){
            kq=mid;
            l=mid+1;
        }
        else
            r=mid-1;
    }
    if (kq<s.length())
        s.erase(kq,s.length()-kq);
    while (s.length()<n){
        if (make_test('1'+s)){
            s='1'+s;
            continue;
        }
        s='0'+s;
    }
    return s;
}

Compilation message (stderr)

dna.cpp: In function 'std::string analyse(int, int)':
dna.cpp:23:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   23 |     while (s.length()<n){
      |            ~~~~~~~~~~^~
dna.cpp:47:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |     if (kq<s.length())
      |         ~~^~~~~~~~~~~
dna.cpp:49:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   49 |     while (s.length()<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: 64 / 64