Submission #381213

#	Time	Username	Problem	Language	Result	Execution time	Memory
381213		Pichon5	Werewolf (IOI18_werewolf)	C++17	0 / 100	4094 ms	29788 KiB

werewolf

#include "werewolf.h"
#include<bits/stdc++.h>
#define lcm(a,b) (a/__gcd(a,b))*b
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define ll long long int
#define vi vector<int>
#define vll vector<ll>
#define pb push_back
#define F first
#define S second
#define mp make_pair
using namespace std;
vector<vi>G;
vector<pair<int,int> >color;//1 es que se vuelve wolf
vector<bool>vis1,vis2;
void dfs1(int nodo, int L){
    vis1[nodo]=true;
    for(auto it : G[nodo]){
        if(vis1[it]==false && it>=L){
            dfs1(it,L);
        }
    }
}
void dfs2(int nodo,int R){
    vis2[nodo]=true;
    for(auto it : G[nodo]){
        if(vis2[it]==false && it<=R){
            dfs2(it,R);
        }
    }
}
vi check_validity(int N,vi X,vi Y,vi S,vi E,vi L,vi R) {
    //N number of cities
    //X ^ Y roads
    //S ^ E start and end
    //avoid 0,1...L-1  in human form
    //avoid R+1,R+2...N-1 in wolf form
    int Q = S.size();
    vi res;
    int n=N;
    G.assign(n+1,vi());
    for(int i=0;i<X.size();i++){
        G[X[i]].pb(Y[i]);
        G[Y[i]].pb(X[i]);
    }
    for(int i=0;i<Q;i++){
        int a=S[i],b=E[i];
        int ok=0;
        /*if(a<=L[i]-1 or b>=R[i]+1){
            res.pb(0);
            continue;
        }*/
        vis2.assign(n+1,false);
        vis1.assign(n+1,false);
        dfs1(a,L[i]);dfs2(b,R[i]);
        for(int l=L[i];l<=R[l];l++){
            if(vis1[l]==vis2[l] && vis1[l]==1){
                ok=1;break;
            }
        }
        res.pb(ok);
    }
    return res;
}
/*
6 6 3
5 1
1 2
1 3
3 4
3 0
5 2
4 2 1 2
4 2 2 2
5 4 3 4
*/

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:42:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     for(int i=0;i<X.size();i++){
      |                 ~^~~~~~~~~

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