Submission #736971

#	Time	Username	Problem	Language	Result	Execution time	Memory
736971		almothana05	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <string>
#include "combo.h"

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;
}

























#include "combo.h"
#include "bits/stdc++.h"
using namespace std;
string guess_sequence(int menge) {
  string s , t = "" , cmp = "";
  int x = press("AB");
  if(x == 0){
    x = press("X");
    if(x == 0){
      s += 'Y';
      t = "ABX";
    }
    else{
      s += 'X';
      t = "ABY";
    }
  }
  else{
    x = press("A");
    if(x == 0){
      s += 'B';
      t = "AYX";
    }
    else{
      s += 'A';
      t = "YBX";
    }
  }
  if(menge == 1){
    return s;
  }
  for(int i = 1 ; i < menge - 1 ; i++){
    cmp += s;
    cmp += t[0];

    cmp += s;
    cmp += t[1];
    cmp += t[0];

    cmp += s;
    cmp += t[1];
    cmp += t[1];

    cmp += s;
    cmp += t[1];
    cmp += t[2];

    x = press(cmp);
    if(x == s.size()){
      s += t[2];
    }
    else if(x == s.size() + 1){
      s += t[0];
    }
    else{
      s += t[1];
    }
    cmp = "";
  }
  cmp += s;
  cmp += t[0];

  cmp += s;
  cmp += t[1];

  x = press(cmp);
  if(x == s.size()){
    s += t[2];
  }
  else{
    cmp = s;
    cmp += t[0];
    x = press(cmp);
    if(x == s.size()){
      s += t[1];
    }
    else{
      s += t[0];
    }
  }
  return s;
}



























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) {
    wrong_answer("wrong guess");
    exit(0);
  }
  printf("Accepted: %d\n", num_moves);
  return 0;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:123:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  123 |     if(x == s.size()){
      |        ~~^~~~~~~~~~~
combo.cpp:126:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  126 |     else if(x == s.size() + 1){
      |             ~~^~~~~~~~~~~~~~~
combo.cpp:141:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  141 |   if(x == s.size()){
      |      ~~^~~~~~~~~~~
combo.cpp:148:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  148 |     if(x == s.size()){
      |        ~~^~~~~~~~~~~
/usr/bin/ld: /tmp/ccgafRfn.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/cc7RrN6l.o:combo.cpp:(.text+0xf0): first defined here
/usr/bin/ld: /tmp/ccgafRfn.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc7RrN6l.o:combo.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status