제출 #1008707

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1008707		De3b0o	가장 긴 여행 (IOI23_longesttrip)	C++17	100 / 100	14 ms	700 KiB

longesttrip

#include "longesttrip.h"
#include<bits/stdc++.h>
#include<random>
#define ll long long
#define F first
#define S second
#define in insert
#define pb push_back
#define ppb pop_back()
#define d3 ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define cans cout << ans << "\n";
#define yes cout << "Yes" << "\n";
#define no cout << "No" << "\n";
#define pll pair<ll,ll>
#define lin cout << "\n";
#define sqr 340
#define mod 1000000007
#define mid ((l+r)/2)
#define lc (2*x)
#define rc (2*x+1)

using namespace std;

std::vector<int> longest_trip(int N, int D)
{
    ll n = N;
    vector<ll> v;
    for(int i = 0 ; n>i ; i++)
        v.pb(i);
    random_shuffle(v.begin(),v.end());
    ll l1 = v[0] , l2 = v[1];
    vector<ll> p1 , p2;
    p1.pb(v[0]);
    p2.pb(v[1]);
    bool g1 = 0;
    for(int i = 2 ; n>i ; i++)
    {
        if(are_connected({l1},{v[i]}))
        {
            p1.pb(v[i]);
            l1=v[i];
            g1 = 0;
        }
        else
        {
            if(g1)
            {
                p2.pb(v[i]);
                l2=v[i];
            }
            else
            {
                if(are_connected({l2},{v[i]}))
                {
                    p2.pb(v[i]);
                    l2=v[i];
                    g1=1;
                }
                else
                {
                    for(int j = p2.size()-1 ; j>=0 ; j--)
                        p1.pb(p2[j]);
                    l1 = p1[p1.size()-1];
                    p2.clear();
                    p2.pb(v[i]);
                    l2=v[i];
                }
            }
        }
    }
    vector<int> trnbo;
    if(p2.size()==0)
    {
        for(auto it : p1)
            trnbo.pb(it);
    }
    else
    {
        if(are_connected({p1[0]},{p2[0]}))
        {
            for(int j = p1.size()-1 ; j>=0 ; j--)
                trnbo.pb(p1[j]);
            for(auto it : p2)
                trnbo.pb(it);
        }
        else if(are_connected({p1[0]},{p2[p2.size()-1]}))
        {
            for(int j = p1.size()-1 ; j>=0 ; j--)
                trnbo.pb(p1[j]);
            for(int j = p2.size()-1 ; j>=0 ; j--)
                trnbo.pb(p2[j]);
        }
        else if(are_connected({p1[p1.size()-1]},{p2[0]}))
        {
            for(auto it : p1)
                trnbo.pb(it);
            for(auto it : p2)
                trnbo.pb(it);
        }
        else if(are_connected({p1[p1.size()-1]},{p2[p2.size()-1]}))
        {
            for(auto it : p1)
                trnbo.pb(it);
            for(int j = p2.size()-1 ; j>=0 ; j--)
                trnbo.pb(p2[j]);
        }
        else
        {
            ll l = 0 , r = p1.size()-1;
            vector<int> pp2;
            for(auto it : p2)
                pp2.pb(it);
            while(l<=r)
            {
                vector<int> v1;
                for(int j = 0 ; mid>=j ; j++)
                    v1.pb(p1[j]);
                if(are_connected(v1,pp2))
                    r=mid-1;
                else
                    l=mid+1;
            }
            r++;
            if(r==p1.size())
            {
                if(p1.size()>p2.size())
                {
                    for(auto it : p1)
                        trnbo.pb(it);
                }
                else
                {
                    for(auto it : p2)
                        trnbo.pb(it);
                }
                return trnbo;
            }
            ll f = r;
            vector<int> v1 = {p1[r]};
            l = 0;
            r = p2.size()-1;
            while(l<=r)
            {
                vector<int> v2;
                for(int j = 0 ; mid>=j ; j++)
                    v2.pb(p2[j]);
                if(are_connected(v1,v2))
                    r=mid-1;
                else
                    l=mid+1;
            }
            r++;
            ll s = r;
            for(int j = f+1 ; p1.size()>j ; j++)
                trnbo.pb(p1[j]);
            for(int j = 0 ; f>=j ; j++)
                trnbo.pb(p1[j]);
            trnbo.pb(p2[s]);
            for(int j = s+1 ; p2.size()>j ; j++)
                trnbo.pb(p2[j]);
            for(int j = 0 ; s>j ; j++)
                trnbo.pb(p2[j]);
        }
    }
    return trnbo;
}

컴파일 시 표준 에러 (stderr) 메시지

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:38:27: warning: narrowing conversion of 'l1' from 'long long int' to 'int' [-Wnarrowing]
   38 |         if(are_connected({l1},{v[i]}))
      |                           ^~
longesttrip.cpp:38:27: warning: narrowing conversion of 'l1' from 'long long int' to 'int' [-Wnarrowing]
longesttrip.cpp:38:37: warning: narrowing conversion of 'v.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)i))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
   38 |         if(are_connected({l1},{v[i]}))
      |                                     ^
longesttrip.cpp:38:37: warning: narrowing conversion of 'v.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)i))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:53:35: warning: narrowing conversion of 'l2' from 'long long int' to 'int' [-Wnarrowing]
   53 |                 if(are_connected({l2},{v[i]}))
      |                                   ^~
longesttrip.cpp:53:35: warning: narrowing conversion of 'l2' from 'long long int' to 'int' [-Wnarrowing]
longesttrip.cpp:53:45: warning: narrowing conversion of 'v.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)i))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
   53 |                 if(are_connected({l2},{v[i]}))
      |                                             ^
longesttrip.cpp:53:45: warning: narrowing conversion of 'v.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)i))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:79:41: warning: narrowing conversion of 'p1.std::vector<long long int>::operator[](0)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
   79 |         if(are_connected({p1[0]},{p2[0]}))
      |                                         ^
longesttrip.cpp:79:41: warning: narrowing conversion of 'p1.std::vector<long long int>::operator[](0)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:79:41: warning: narrowing conversion of 'p2.std::vector<long long int>::operator[](0)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:79:41: warning: narrowing conversion of 'p2.std::vector<long long int>::operator[](0)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:86:56: warning: narrowing conversion of 'p1.std::vector<long long int>::operator[](0)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
   86 |         else if(are_connected({p1[0]},{p2[p2.size()-1]}))
      |                                                        ^
longesttrip.cpp:86:56: warning: narrowing conversion of 'p1.std::vector<long long int>::operator[](0)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:86:56: warning: narrowing conversion of 'p2.std::vector<long long int>::operator[]((p2.std::vector<long long int>::size() - 1))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:86:56: warning: narrowing conversion of 'p2.std::vector<long long int>::operator[]((p2.std::vector<long long int>::size() - 1))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:93:56: warning: narrowing conversion of 'p1.std::vector<long long int>::operator[]((p1.std::vector<long long int>::size() - 1))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
   93 |         else if(are_connected({p1[p1.size()-1]},{p2[0]}))
      |                                                        ^
longesttrip.cpp:93:56: warning: narrowing conversion of 'p1.std::vector<long long int>::operator[]((p1.std::vector<long long int>::size() - 1))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:93:56: warning: narrowing conversion of 'p2.std::vector<long long int>::operator[](0)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:93:56: warning: narrowing conversion of 'p2.std::vector<long long int>::operator[](0)' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:100:66: warning: narrowing conversion of 'p1.std::vector<long long int>::operator[]((p1.std::vector<long long int>::size() - 1))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
  100 |         else if(are_connected({p1[p1.size()-1]},{p2[p2.size()-1]}))
      |                                                                  ^
longesttrip.cpp:100:66: warning: narrowing conversion of 'p1.std::vector<long long int>::operator[]((p1.std::vector<long long int>::size() - 1))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:100:66: warning: narrowing conversion of 'p2.std::vector<long long int>::operator[]((p2.std::vector<long long int>::size() - 1))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:100:66: warning: narrowing conversion of 'p2.std::vector<long long int>::operator[]((p2.std::vector<long long int>::size() - 1))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:124:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  124 |             if(r==p1.size())
      |                ~^~~~~~~~~~~
longesttrip.cpp:139:36: warning: narrowing conversion of 'p1.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)r))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
  139 |             vector<int> v1 = {p1[r]};
      |                                    ^
longesttrip.cpp:139:36: warning: narrowing conversion of 'p1.std::vector<long long int>::operator[](((std::vector<long long int>::size_type)r))' from '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} to 'int' [-Wnarrowing]
longesttrip.cpp:154:40: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  154 |             for(int j = f+1 ; p1.size()>j ; j++)
      |                               ~~~~~~~~~^~
longesttrip.cpp:159:40: warning: comparison of integer expressions of different signedness: 'std::vector<long long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  159 |             for(int j = s+1 ; p2.size()>j ; j++)
      |                               ~~~~~~~~~^~

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