Submission #425686

#	Time	Username	Problem	Language	Result	Execution time	Memory
425686		MOUF_MAHMALAT	Toy Train (IOI17_train)	C++14	0 / 100	2059 ms	1136 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],is[5009];
bool dfs(ll d,ll op)
{
    if(is[d])
        return 1;
    is[d]=1;
    if(c[d])
        op=n;
    if(op==0)
        return 0;
    bool r=b[d]^1;
    for(auto z:v[d])
    {
        if(b[d])
            r|=dfs(z,op-1);
        else
            r&=dfs(z,op-1);
    }
    is[d]=0;
    return r;
}
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=0; i<n; i++)
        ans.push_back(dfs(i,n));
    return ans;
}

Compilation message (stderr)

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:32:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |     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