제출 #425727

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
425727		MOUF_MAHMALAT	장난감 기차 (IOI17_train)	C++14	0 / 100	357 ms	262148 KiB

train

#include "train.h"
#include<bits/stdc++.h>
using namespace std;
typedef int ll;
vector<vector<ll> >v;
ll n;
bool b[5009],c[5009];
bool best(ll d)
{
    ll r=b[d]^1;
    for(auto z:v[d])
    {
        if(z==d)
        {
            if(c[d])
            {
                if(b[d])
                    r=1;
            }
            else if(c[d])
            {
                if(!b[d])
                    r=0;
            }
        }
        else
        {
            if(b[d])
                r|=best(z);
            else
                r&=best(z);
        }
    }
}
vector<int> who_wins(vector<int> A, vector<int> R, vector<int> from, vector<int> to)
{
    n=A.size();
    v.resize(n);
    for(ll i=0; i<to.size(); i++)
        v[from[i]].push_back(to[i]);
    for(ll i=0; i<n; i++)
        b[i]=A[i],c[i]=R[i];
    vector<ll>ans;
    for(ll i=n-1; i>=0; i--)
    ans.push_back(best(i));
    return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

train.cpp: In function 'bool best(ll)':
train.cpp:34:1: warning: no return statement in function returning non-void [-Wreturn-type]
   34 | }
      | ^
train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:39:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     for(ll i=0; i<to.size(); i++)
      |                 ~^~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 10
• Subtask 3: 0 / 11
• Subtask 4: 0 / 11
• Subtask 5: 0 / 12
• Subtask 6: 0 / 51