제출 #862910

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
862910		faustaadp	참나무 (IOI23_beechtree)	C++17	9 / 100	113 ms	31540 KiB

beechtree

#include "beechtree.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
const ll NN = 2e5 + 5;
vector<pll> v[NN];
ll ada[NN], ade[NN];
std::vector<int> beechtree(int N, int M, std::vector<int> P, std::vector<int> C)
{
    vector<int> ret(N, 0);
    for(ll i = 1; i < N; i++)
        v[P[i]].pb(mp(i, C[i]));
    ret[0] = 1;
    {
        vector<ll> tmp;
        for(auto a : v[0])
        {
            ada[a.se] = 1;
            tmp.pb(a.se);
        }
        sort(tmp.begin(), tmp.end());
        for(ll j = 1; j < tmp.size(); j++)
            if(tmp[j - 1] == tmp[j])
                ret[0] = 0;
    }

    vector<pair<ll, vector<ll> > > vv;
    for(ll i = 1; i < N; i++)
        if(v[i].size() == 0)
            ret[i] = 1;
        else
        {
            ret[i] = 1;
            vector<ll> tmp;
            for(auto a : v[i])
                tmp.pb(a.se);
            sort(tmp.begin(), tmp.end());
            for(ll j = 0; j < tmp.size(); j++)
            {
                if(!ada[tmp[j]])
                    ret[0] = 0;
            }
            for(ll j = 1; j < tmp.size(); j++)
                if(tmp[j - 1] == tmp[j])
                {
                    ret[0] = 0;
                    ret[i] = 0;
                }
            vv.pb(mp((ll)tmp.size(), tmp));
        }
    sort(vv.begin(), vv.end());
    for(ll i = 1; i < vv.size(); i++)
    {
        for(auto a : vv[i].se)ade[a] = i;
        for(auto a : vv[i - 1].se)
            if(ade[a] != i)
                ret[0] = 0;
    }
    return ret;
}

컴파일 시 표준 에러 (stderr) 메시지

beechtree.cpp: In function 'std::vector<int> beechtree(int, int, std::vector<int>, std::vector<int>)':
beechtree.cpp:27:25: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |         for(ll j = 1; j < tmp.size(); j++)
      |                       ~~^~~~~~~~~~~~
beechtree.cpp:43:29: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |             for(ll j = 0; j < tmp.size(); j++)
      |                           ~~^~~~~~~~~~~~
beechtree.cpp:48:29: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |             for(ll j = 1; j < tmp.size(); j++)
      |                           ~~^~~~~~~~~~~~
beechtree.cpp:57:21: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, std::vector<long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     for(ll i = 1; i < vv.size(); i++)
      |                   ~~^~~~~~~~~~~

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