Submission #139150

#	Time	Username	Problem	Language	Result	Execution time	Memory
139150		PedroBigMan	Combo (IOI18_combo)	C++14	100 / 100	56 ms	2076 KiB

combo

#include "combo.h"
#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <string>
using namespace std;
typedef int ll;
typedef unsigned long long int ull;
typedef long double ld;
#define REP(i,a,b) for(ll i=a; i<b; i++)
#define pb push_back
#define mp make_pair
#define pl pair<ll,ll>
#define ff first
#define ss second
#define INF ((ll) pow(2,63) -1)
ll insig;
#define In(vecBRO, LENBRO) REP(IBRO,0,LENBRO) {cin>>insig; vecBRO.pb(insig);}
void Out(vector<ll> x) {REP(i,0,x.size()) {cout<<x[i]<<" ";} cout<<endl;}

std::string guess_sequence(int N) 
{
    string p=""; char first; vector<char> c; 
    ll d1 = press("AB"); ll d2;
    if(d1==0)
    {
        d2 = press("X");
        if(d2==0) {first = 'Y';}
        else {first = 'X';}
    }
    else
    {
        d2 = press("A");
        if(d2==0) {first = 'B';}
        else {first = 'A';}
    }
    p+=first;
    if(N==1) {return p;}
    if(first!='A') {c.pb('A');}
    if(first!='B') {c.pb('B');}
    if(first!='X') {c.pb('X');}
    if(first!='Y') {c.pb('Y');}
    string cur; ll coins;
    while(p.size()<=N-2)
    {
        cur= (string) (p+c[0]+c[0]+p+c[0]+c[1]+p+c[0]+c[2]+p+c[1]);
        coins = press(cur);
        if(coins==p.size()) {p+=c[2];}
        else if(coins==p.size()+1) {p+=c[1];}
        else if(coins==p.size()+2) {p+=c[0];}
    }
    coins = press(p+c[0]+p+c[1]);
    if(coins==N) 
    {
        coins = press(p+c[0]);
        if(coins==N) {p+=c[0];}
        else {p+=c[1];}
    }
    else {p+=c[2];}
    return p;
}

Compilation message (stderr)

combo.cpp: In function 'void Out(std::vector<int>)':
combo.cpp:11:33: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 | #define REP(i,a,b) for(ll i=a; i<b; i++)
......
   20 | void Out(vector<ll> x) {REP(i,0,x.size()) {cout<<x[i]<<" ";} cout<<endl;}
      |                             ~~~~~~~~~~~~
combo.cpp:20:25: note: in expansion of macro 'REP'
   20 | void Out(vector<ll> x) {REP(i,0,x.size()) {cout<<x[i]<<" ";} cout<<endl;}
      |                         ^~~
combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:45:19: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   45 |     while(p.size()<=N-2)
      |           ~~~~~~~~^~~~~
combo.cpp:49:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |         if(coins==p.size()) {p+=c[2];}
      |            ~~~~~^~~~~~~~~~
combo.cpp:50:22: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |         else if(coins==p.size()+1) {p+=c[1];}
      |                 ~~~~~^~~~~~~~~~~~
combo.cpp:51:22: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |         else if(coins==p.size()+2) {p+=c[0];}
      |                 ~~~~~^~~~~~~~~~~~

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