Submission #1052185

#TimeUsernameProblemLanguageResultExecution timeMemory
1052185khanhtbCombo (IOI18_combo)C++14
Compilation error
0 ms0 KiB
#include <bits/stdc++.h> #include "combo.h" #define ll long long #define ull unsigned long long #define ld long double #define pb push_back #define pf push_front #define vi vector<ll> #define vii vector<vi> #define pll pair<ll, ll> #define vpll vector<pll> #define all(a) a.begin(), a.end() #define fi first #define se second using namespace std; const ll mod = 1e9+7; const ll inf = 2e18; const ll B = 320; const ll N = 1e5+8; string ans = ""; int press(string p){ cout << p << '\n'; int rep; cin >> rep; return rep; } vector<char> bt = {'A','B','X','Y'}; string guess_sequence(int N){ int fid = 0; if(press("AB")){ if(press("A")) fid = 0; else fid = 1; } else{ if(press("X")) fid = 2; else fid = 3; } ans += bt[fid]; while(ans.size() < N){ int i1 = -1, i2 = -1, i3 = -1; for(int i = 0; i < 4; i++){ if(i == fid) continue; if(i1 == -1) i1 = i; else if(i2 == -1) i2 = i; else i3 = i; } int rep = press(ans + bt[i1] + bt[i2] + bt[i3] + ans + bt[i2] + bt[i3] + ans + bt[i3]); if(rep == ans.size()+1) ans += bt[i3]; else if(rep == ans.size()+2) ans += bt[i2], ans += bt[i3]; else ans += bt[i1], ans += bt[i2], ans += bt[i3]; } return ans; }

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:38:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   38 |     while(ans.size() < N){
      |           ~~~~~~~~~~~^~~
combo.cpp:47:16: 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(rep == ans.size()+1) ans += bt[i3];
      |            ~~~~^~~~~~~~~~~~~~~
combo.cpp:48:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         else if(rep == ans.size()+2) ans += bt[i2], ans += bt[i3];
      |                 ~~~~^~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/cccZ1SvU.o: in function `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)':
grader.cpp:(.text+0x0): multiple definition of `press(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >)'; /tmp/ccxRIeDS.o:combo.cpp:(.text+0xc0): first defined here
collect2: error: ld returned 1 exit status