Submission #33858

#	Time	Username	Problem	Language	Result	Execution time	Memory
33858		wan2000	Martian DNA (IOI16_dna)	C++14	36 / 100	26 ms	2016 KiB

dna

#include "dna.h"
#include <bits/stdc++.h>

using namespace std;

string analyse(int n, int t){
    string res = "";
    int l = 1, r = n, mid;
    while(l<=r){
        mid = (l+r)>>1;
        string tmp = res;
        while(tmp.size()<mid){
            if(make_test(tmp+"0")) tmp += "0";
            else tmp += "1";
        }
        if(make_test(tmp)){
            res = tmp;
            l = mid+1;
        }
        else{
            r = mid-1;
        }
    }
    while(res.size()<n){
        if(make_test("0"+res)) res = "0" + res;
        else res = "1" + res;
    }
    return res;
}

Compilation message (stderr)

dna.cpp: In function 'std::__cxx11::string analyse(int, int)':
dna.cpp:12:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while(tmp.size()<mid){
                         ^
dna.cpp:24:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(res.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