Submission #431638

#	Time	Username	Problem	Language	Result	Execution time	Memory
431638		Bench0310	늑대인간 (IOI18_werewolf)	C++17	15 / 100	4046 ms	26076 KiB

werewolf

#include <bits/stdc++.h>
#include "werewolf.h"

using namespace std;
typedef long long ll;

const int N=200005;
int n,m,q;
vector<int> v[N];

vector<int> solve_small(vector<int> ns,vector<int> ne,vector<int> nl,vector<int> nr)
{
    vector<int> res(q,0);
    for(int o=0;o<q;o++)
    {
        int s=ns[o];
        int e=ne[o];
        int l=nl[o];
        int r=nr[o];
        vector<array<int,2>> dp(n,{0,0});
        queue<array<int,2>> b;
        auto add=[&](int a,int t)
        {
            if(dp[a][t]==0)
            {
                dp[a][t]=1;
                b.push({a,t});
            }
        };
        add(s,0);
        while(!b.empty())
        {
            auto [a,t]=b.front();
            b.pop();
            if(l<=a&&a<=r&&t==0) add(a,1);
            for(int to:v[a])
            {
                if(t==0&&to>=l) add(to,0);
                if(t==1&&to<=r) add(to,1);
            }
        }
        res[o]=dp[e][1];
    }
    return res;
}

vector<int> check_validity(int nn,vector<int> nx,vector<int> ny,vector<int> ns,vector<int> ne,vector<int> nl,vector<int> nr)
{
    n=nn;
    m=nx.size();
    q=ns.size();
    for(int i=0;i<m;i++)
    {
        v[nx[i]].push_back(ny[i]);
        v[ny[i]].push_back(nx[i]);
    }
    if(n<=3000&&m<=6000&&q<=3000) return solve_small(ns,ne,nl,nr);
}

//int main()
//{
//    
//    return 0;
//}

Compilation message (stderr)

werewolf.cpp: In function 'std::vector<int> check_validity(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
werewolf.cpp:58:1: warning: control reaches end of non-void function [-Wreturn-type]
   58 | }
      | ^

• Subtask 1: 7 / 7
• Subtask 2: 8 / 8
• Subtask 3: 0 / 34
• Subtask 4: 0 / 51