Submission #139588

#	Time	Username	Problem	Language	Result	Execution time	Memory
139588		Bazarkuly2003	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include<bits/stdc++.h>
//#include<string>
//#include<cmath>
//#include<conio.h>
#define ll long  long

using namespace std;
ll n,m;
string s,q,t;

namespace {

constexpr int MAX_N = 2000;
constexpr int MAX_NUM_MOVES = 8000;

int N;
std::string S;

int num_moves;

void wrong_answer(const char *MSG) {
  printf("Wrong Answer: %s\n", MSG);
  exit(0);
}

}  // namespace


int press(std::string p) {
  if (++num_moves > MAX_NUM_MOVES) {
    wrong_answer("too many moves");
  }
  int len = p.length();
  if (len > 4 * N) {
    wrong_answer("invalid press");
  }
  for (int i = 0; i < len; ++i) {
    if (p[i] != 'A' && p[i] != 'B' && p[i] != 'X' && p[i] != 'Y') {
      wrong_answer("invalid press");
    }
  }
  int coins = 0;
  for (int i = 0, j = 0; i < len; ++i) {
    if (j < N && S[j] == p[i]) {
      ++j;
    } else if (S[0] == p[i]) {
      j = 1;
    } else {
      j = 0;
    }
    coins = std::max(coins, j);
  }
  return coins;
}


int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin>>n;
if(press("A")==1){s="A";q="BXY";}else
if(press("B")==1){s="B";q="AXY";}else
if(press("X")==1){s="X";q="ABY";}else{s="Y";q="ABX";}

while(s.size()<n){
t=s+q[0]+q[0]+s+q[0]+q[1]+s+q[0]+q[2]+s+q[1];

m=press(t);
if(m==s.size()+0)s+=q[2];else
if(m==s.size()+1)s+=q[1];else 
if(m==s.size()+2)s+=q[0];}
cout<<s;
}

Compilation message (stderr)

combo.cpp: In function 'int main()':
combo.cpp:64:15: 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]
   64 | while(s.size()<n){
      |       ~~~~~~~~^~
combo.cpp:68:5: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 | if(m==s.size()+0)s+=q[2];else
      |    ~^~~~~~~~~~~~
combo.cpp:69:5: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 | if(m==s.size()+1)s+=q[1];else
      |    ~^~~~~~~~~~~~
combo.cpp:70:5: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 | if(m==s.size()+2)s+=q[0];}
      |    ~^~~~~~~~~~~~
/usr/bin/ld: /tmp/ccFFTU75.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/ccLobJc7.o:combo.cpp:(.text+0x1d0): first defined here
/usr/bin/ld: /tmp/ccFFTU75.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccLobJc7.o:combo.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccFFTU75.o: in function `main':
grader.cpp:(.text.startup+0x4c): undefined reference to `guess_sequence[abi:cxx11](int)'
collect2: error: ld returned 1 exit status