Submission #964996

#	Time	Username	Problem	Language	Result	Execution time	Memory
964996		ReLice	콤보 (IOI18_combo)	C++14	5 / 100	1 ms	596 KiB

combo

#include "combo.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
#define ll int
#define str string
#define ins insert
#define ld long double
#define pb push_back
#define pf push_front
#define pof pop_front()
#define pob pop_back()
#define lb lower_bound
#define ub upper_bound
#define endl "\n"
#define fr first
#define sc second
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define sz size()
#define vll vector<ll>
#define bc back()
#define arr array
#define pll vector<pair<ll,ll>>
using namespace std;/*
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set tree<ll, null_type,less_equal<ll>, rb_tree_tag,tree_order_statistics_node_update>*/
template<class S,class T>
bool chmin(S &a,const T &b) {
	return a>b?(a=b)==b:false;
}
template<class S,class T>
bool chmax(S &a,const T &b) {
	return a<b?(a=b)==b:false;
}

const ll mod=1e9+7;
const ld eps=1e-9;
const ll N=3e3+7;

str guess_sequence(ll n) {
    ll i,j;
    ll x=press("AB");
    str s;
    vector<char> v={'A','B','X','Y'};
    if(x){
        x=press("A");
        if(x)s="A";
        else s="B";
    }else{
        x=press("X");
        if(x)s="X";
        else s="Y";
    }
    v.erase(lower_bound(all(v),s[0]));
    for(i=2;i<n;i++){
        x=press(s+v[0]+s+v[1]+v[0]+s+v[1]+v[1]+s+v[1]+v[2]);
        if(x==s.sz+1)s+=v[0];
        else if(x>s.sz+1)s+=v[1];
        else s+=v[2];
    }
    x=press(s+v[0]+s+v[1]);
    if(x==n){
        x=press(s+v[0]);
        if(x==n)s+=v[0];
        else s+=v[1];
    }else s+=v[2];
    return s;
}

Compilation message (stderr)

combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:59:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |         if(x==s.sz+1)s+=v[0];
      |            ~^~~~~~~~
combo.cpp:60:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |         else if(x>s.sz+1)s+=v[1];
      |                 ~^~~~~~~
combo.cpp:43:10: warning: unused variable 'j' [-Wunused-variable]
   43 |     ll i,j;
      |          ^

• Subtask 1: 5 / 5
• Subtask 2: 0 / 95