Submission #1024200

#	Time	Username	Problem	Language	Result	Execution time	Memory
1024200		ksu2009en	Werewolf (IOI18_werewolf)	C++17	0 / 100	4062 ms	35668 KiB

werewolf

#include "werewolf.h"
#include <iostream>
#include <vector>
#include <string>
#include <math.h>
#include <cmath>
#include <iomanip>
#include <cstdio>
#include <algorithm>
#include <numeric>
#include <map>
#include <set>
#include <queue>
#include <stack>
#include <deque>
#include <bitset>
#include <cstring>
#include <unordered_map>

using namespace std;
typedef int ll;

vector<ll> d[200007];

bool used1[200007], used2[200007];

ll lim = 0;

void dfs1(ll v){
    if(v < lim)
        return;
    
    used1[v] = true;
    for(auto i: d[v]){
        if(!used1[i] && i >= lim)
            dfs1(i);
    }
}

void dfs2(ll v){
    if(v > lim)
        return;
    
    used2[v] = true;
    for(auto i: d[v]){
        if(!used2[i] && i <= lim)
            dfs2(i);
    }
}

std::vector<int> check_validity(int n, std::vector<int> x, std::vector<int> y,
                                std::vector<int> s, std::vector<int> e,
                                std::vector<int> l, std::vector<int> r) {
    
    ll q = l.size();
    
    for(int i = 0; i < q; i++)
        s[i]++, e[i]++;
    
    for(int i = 0; i < x.size(); i++){
        d[x[i]].push_back(y[i]);
        d[y[i]].push_back(x[i]);
    }
    
    vector<int> ans(q);
    
    for(int i = 0; i < q; i++){
        ll lim = l[i];
        
        dfs1(s[i]);
        lim = r[i];
        dfs2(e[i]);
        
        int res = 0;
        for(int j = 1; j <= n; j++){
            if(used1[j] && used2[j]){
                res = 1;
            }
            
            used1[j] = used2[j] = 0;
        }
        
        ans.push_back(res);
    }
    
    return ans;
}

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:60:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   60 |     for(int i = 0; i < x.size(); i++){
      |                    ~~^~~~~~~~~~
werewolf.cpp:68:12: warning: variable 'lim' set but not used [-Wunused-but-set-variable]
   68 |         ll lim = l[i];
      |            ^~~

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