Submission #1020651

#	Time	Username	Problem	Language	Result	Execution time	Memory
1020651		khome	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
#include "combo.h"
 
using namespace std;
 
string guess_sequence(long long N) {
    vector<string> a;
    a={"A", "B", "X", "Y"};
    // cout << N << "\n";
    string res, per = "";
    while (res.size()!=N){
      for (string i : a){
        if (per != i && press(res+i) == (res+i).size()){
          // cout << press(res+i) << ' ' << res+i << "\n";
          if (per == "") per = i;
          res += i;
        }
      }
    }
    // cout << res << "\n";
    return res;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(long long int)':
combo.cpp:11:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   11 |     while (res.size()!=N){
      |            ~~~~~~~~~~^~~
combo.cpp:13:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |         if (per != i && press(res+i) == (res+i).size()){
      |                         ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/cctfEwr1.o: in function `main':
grader.cpp:(.text.startup+0x4c): undefined reference to `guess_sequence[abi:cxx11](int)'
collect2: error: ld returned 1 exit status