Submission #1007117

#	Time	Username	Problem	Language	Result	Execution time	Memory
1007117		christinelynn	콤보 (IOI18_combo)	C++17	Compilation error	0 ms	0 KiB

combo

#include <bits/stdc++.h>
using namespace std;
#define pii pair<ll,ll>
#define REP(i,x,y) for(ll i=x;i<=y;i++)
#define freeopen   freopen("input.txt","r",stdin); freopen("output.txt","w",stdout);
#define mod 1000000000
#define pb push_back
#define mk make_pair
#define ll long long
#define foor(x,vec) for(auto x:vec ){cout<<x<<" ";}
#define fi first
#define se second
#define MAXN 500069
#define lld long double
#define cha ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define ffl fflush(stdout)
#define sst string
#include "combo.h"



ll mvx[]={0,0,-1,1};
ll mvy[]={1,-1,0,0};
sst ts="ABXY";
int n;

string guess_sequence(int N){
    n=N;
    sst s="AB";
    int a=press(s);
    sst t="";
    char c='A';
    if(a){
        s="A";
        if(press(s)){
            t=t+"A";
            c='A';
        }
        else{
            t=t+"B";
            c='B';
        }
    }
    else{
        s="X";
        if(press(s)){
            t=t+"X";
            c='X';
        }
        else{
            t=t+"Y";
            c='Y';
        }
    }
    vector <char> vec;
    for(int i=0;i<4;i++){
        if(ts[i]!=c)
        vec.pb(ts[i]);
    }
    ll bf=1;
    for(int i=2;i<n;i++){
        sst p=t+vec[0]+t+vec[1]+vec[0]+t+vec[1]+vec[1]+t+vec[1]+vec[2];
        int val=press(p);
        if(val==bf){
            t=t+vec[2];
        }
        else if(val==bf+1){
            t=t+vec[0];
        }
        else{
            t=t+vec[1];
        }
        bf++;
    }
    s=t+"AB";
    a=press(s);
    if(a==n){
        s=t+"A";
        if(press(s)==n){
            t=t+"A";
            c='A';
        }
        else{
            t=t+"B";
            c='B';
        }
    }
    else{
        s=t+"X";
        if(press(s)==n){
            t=t+"X";
            c='X';
        }
        else{
            t=t+"Y";
            c='Y';
        }
    }
    return 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() {
  char buffer[MAX_N + 1];
  if (scanf("%s", buffer) != 1) {
    fprintf(stderr, "Error while reading input\n");
    exit(1);
  }
  S = buffer;
  N = S.length();

  num_moves = 0;
  std::string answer = guess_sequence(N);
    
  if (answer != S) {
      cout<<answer<<endl;
    wrong_answer("wrong guess");
    exit(0);
  }
  printf("Accepted: %d\n", num_moves);
  return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccKFH5I8.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/ccdn6EC8.o:combo.cpp:(.text+0xf0): first defined here
/usr/bin/ld: /tmp/ccKFH5I8.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccdn6EC8.o:combo.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status