Submission #1124197

#	Time	Username	Problem	Language	Result	Execution time	Memory
1124197		jitic22514	Werewolf (IOI18_werewolf)	C++17	Compilation error	0 ms	0 KiB

werewolf

#include "werewolf.h"
#include<bits/stdc++.h>
#define ll long long
#define pir pair<int,int>
#define fi first
#define se second
using namespace std;
const int maxn = 2e5 + 5;

template <class t1,class t2> inline void mini(t1 &x,t2 y){if (x > y) x = y;}
template <class t1,class t2> inline void maxi(t1 &x,t2 y){if (x < y) x = y;}
template <class t1> inline void print_(vector <t1> v){
	for (t1 x : v) cout << x << " ";cout << "\n";
}

struct query{
	int u,v,l,r,id;
};

vector <int> vec[maxn];
query Q[maxn];

namespace subtask1{
	bool subtask1(int n,int q){
		return (n <= 100 && q <= 100);
	}
	
	struct dsu{
		int par[maxn];
		
		void init(int n){
		    for (int i = 1 ; i <= n ; i++) par[i] = i;	
		}
		
		int findp(int x){
			return (x == par[x]) ? x : par[x] = findp(par[x]);
		}
		
		void add(int u,int v){
			par[findp(u)] = findp(v);
		}
		
		bool is_connected(int u,int v){
			return findp(u) == findp(v);
		}
	} dsu;
	
	bool mark[maxn];
	
	int solve(int n,int source,int sink,int l,int r){
		dsu.init(n);
		bool kt = 0;
		for (int i = l ; i <= r ; i++) mark[i] = 0;
		
		//for source
		for (int u = l ; u < n ; u++)
		  for (int v : vec[u])
		     if (v >= l)
		        dsu.add(u,v);
		
		for (int i = l ; i <= r ; i++)
		   mark[i] = dsu.is_connected(source,i);
		
		dsu.init(n);
		for (int u = r ; u >= 0 ; u--)
		    for (int v : vec[u])
		       if (v <= r)
		         dsu.add(u,v);
		
		for (int i = l ; i <= r ; i++)
		   kt |= (mark[i] && dsu.is_connected(sink,i));
		 
		return kt; 
	}
	
	vector <int> solve(int n,int q){
		vector <int> res;
		
		for (int i = 1 ; i <= q ; i++)
		    res.push_back(solve(n,Q[i].u,Q[i].v,Q[i].l,Q[i].r));
		
		return res;
	}
}

void get_input(int n,vector <int> X,vector <int> Y,
              vector <int> S,vector <int> E,vector <int> L,
			        vector <int> R){
	
	for (int i = 0 ; i < X.size() ; i++){
		int u = X[i],v = Y[i];
		vec[u].push_back(v);
		vec[v].push_back(u);
	}
	
	for (int i = 0 ; i < S.size() ; i++)
		Q[i] = {S[i],E[i],L[i],R[i]};
}
vector <int> check_validity(int n,vector <int> X,vector <int> Y,
              vector <int> S,vector <int> E,vector <int> L,
			        vector <int> R){
	
	get_input(n,X,Y,S,E,L,R);
	int q = S.size();
	
//	if (subtask1::subtask1(n,q)) 
	return subtask1::solve(n,q);
}


void input(int n,int m,int q){
	while (m--){
		int u,v;
		cin >> u >> v;
		vec[u].push_back(v);
		vec[v].push_back(u);
	}
	for (int i = 1 ; i <= q ; i++){
		int u,v,l,r;
		cin >> u >> v >> l >> r;
		Q[i] = {u,v,l,r};
	}
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(0);cout.tie(0);
	
	int n,m,q;
/*	cin >> n >> m >> q;
	input(n,m,q);
	
	if (subtask1::subtask1(n,q)){
		vector <int> r = subtask1::solve(n,q);
		print_(r);
	}*/
	
	

	return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/cc8lEWtt.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccphxPfT.o:werewolf.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status