Submission #34485

#	Time	Username	Problem	Language	Result	Execution time	Memory
34485		top34051	Martian DNA (IOI16_dna)	C++14	36 / 100	29 ms	2016 KiB

dna

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

string s;

bool ask() {
    return make_test(s);
}

string analyse(int n, int t) {
    while(s.size()!=n) {
        s = s + '0';
        if(!ask()) s[s.size()-1] = '1';
        if(!ask()) {
            s.erase(s.size()-1,1);
            break;
        }
    }
    while(s.size()!=n) {
        s = '0' + s;
        if(!ask()) s[0] = '1';
        if(!ask()) {
            s.erase(0,1);
            break;
        }
    }
    return s;
}

Compilation message (stderr)

dna.cpp: In function 'std::__cxx11::string analyse(int, int)':
dna.cpp:12:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(s.size()!=n) {
                   ^
dna.cpp:20:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(s.size()!=n) {
                   ^
grader.cpp: In function 'bool make_test(std::__cxx11::string)':
grader.cpp:14:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < p.size(); i++) {
                    ^
grader.cpp:23:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 1; i <= ss.size(); i++) {
                    ^
grader.cpp:28:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (pr[i] == p.size()) {
             ^

• Subtask 1: 11 / 11
• Subtask 2: 25 / 25
• Subtask 3: 0 / 64