Submission #156405

#	Time	Username	Problem	Language	Result	Execution time	Memory
156405		InfiniteJest	Combo (IOI18_combo)	C++14	Compilation error	0 ms	0 KiB

combo

#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
#include <algorithm>
#include <math.h>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
using namespace std;

ifstream in("input.txt");
ofstream out("output.txt");

typedef long long ll;

int n;
string g;
string s;
vector<string> p;

int press(string p){
  int mas=-1;
  for(int i=0;i<p.length();i++){
    string f="";
    for(int y=i;y<p.length();y++){
      //cout<<"i "<<i<<" y "<<y<<endl;
      f+=p[y];
      if(f==g.substr(0,y-i+1))mas=max(mas,y-i+1);
    }
  }
  return mas;
}

string guess_sequence(int N){
  n=N;
  if(press("AB")>=1){
    if(press("A")>=1)s+="A";
    else s+="B";
  }
  else{
    if(press("X")>=1)s+="X";
    else s+="Y";
  }
  if(s[0]!='A')p.pb("A");
  if(s[0]!='B')p.pb("B");
  if(s[0]!='X')p.pb("X");
  if(s[0]!='Y')p.pb("Y");
  for(int i=1;i<=n-2;i++){
    int k=press(s+p[0]+s+p[1]+p[0]+s+p[1]+p[2]+s+p[1]+p[1]);
    if(k==i+1){
      s+=p[0];
    }
    else if(k>i+1){
      s+=p[1];
    }
    else{
      s+=p[2];
    }
  }
  if(press(s+p[0]+s+p[1])==n){
    if(press(s+p[0])==n)s+=p[0];
    else s+=p[1];
  }
  else{
    s+=p[2];
  }
  return s;
}

Compilation message (stderr)

combo.cpp: In function 'int press(std::string)':
combo.cpp:25:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |   for(int i=0;i<p.length();i++){
      |               ~^~~~~~~~~~~
combo.cpp:27:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |     for(int y=i;y<p.length();y++){
      |                 ~^~~~~~~~~~~
/usr/bin/ld: /tmp/ccZpeBov.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/cc2X1zps.o:combo.cpp:(.text+0x180): first defined here
collect2: error: ld returned 1 exit status