Submission #139582

#	Time	Username	Problem	Language	Result	Execution time	Memory
139582		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
#define N 1000001
using namespace std;
ll n,m;
string s,q,t;
int press(string p){
}

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";}

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

Compilation message (stderr)

combo.cpp: In function 'int press(std::string)':
combo.cpp:11:1: warning: no return statement in function returning non-void [-Wreturn-type]
   11 | }
      | ^
combo.cpp: In function 'int main()':
combo.cpp:21:15: 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]
   21 | while(s.size()<n){
      |       ~~~~~~~~^~
combo.cpp:23:5: 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]
   23 | if(m==s.size()+0)s+=q[2];else
      |    ~^~~~~~~~~~~~
combo.cpp:24:5: 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]
   24 | if(m==s.size()+1)s+=q[1];else s+=q[0];}
      |    ~^~~~~~~~~~~~
/usr/bin/ld: /tmp/ccbJdYFm.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/ccJXkvwp.o:combo.cpp:(.text.unlikely+0x0): first defined here
/usr/bin/ld: /tmp/ccbJdYFm.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccJXkvwp.o:combo.cpp:(.text.unlikely+0x4): first defined here
/usr/bin/ld: /tmp/ccbJdYFm.o: in function `main':
grader.cpp:(.text.startup+0x4c): undefined reference to `guess_sequence[abi:cxx11](int)'
collect2: error: ld returned 1 exit status