| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 128895 | Kerim | 늑대인간 (IOI18_werewolf) | C++17 | 0 ms | 0 KiB |
이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "werewolf.h"
#include "bits/stdc++.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x) cerr<< #x <<" = "<< x<<endl;
using namespace std;
typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
int n,m,q,ata[MAXN];
int tap(int x){
if(ata[x]==x)
return x;
return ata[x]=tap(ata[x]);
}
vector<int>adj[MAXN][2],a[MAXN],b[MAXN];
int vis[MAXN][2],par[MAXN][2];
void dfs(int nd,int t){
vis[nd][t]=1;
tr(it,adj[nd][t])
dfs(*it,t);
}
void print(int nd,int t){
tr(it,adj[nd][t]){
cout<<nd<<"->"<<*it<<endl;
print(*it,t);
}
}
vector<int>check_validity(int N, vector<int> X, vector<int> Y, vector<int> S, vector<int> E,vector<int> L, vector<int> R) {
q=S.size();n=N;m=X.size();
for(int i=0;i<m;i++){
int u=X[i]+1,v=Y[i]+1;
if(u>v)
swap(u,v);
a[u].pb(v);b[v].pb(u);
}
for(int i=1;i<=n;i++)
ata[i]=i;
for(int i=1;i<=n;i++)
tr(it,b[i])
if(tap(*it)!=i){
adj[i][0].pb(tap(*it));
par[tap(*it)][0]=i;
ata[tap(*it)]=i;
}
for(int i=1;i<=n;i++)
ata[i]=i;
for(int i=n;i>=1;i--)
tr(it,a[i])
if(tap(*it)!=i){
adj[i][1].pb(tap(*it));
par[tap(*it)][1]=i;
ata[tap(*it)]=i;
}
vector<int>ans(q);
for(int i=0;i<q;i++){
int s=S[i]+1,e=E[i]+1,l=L[i]+1,r=R[i]+1;
while(par[s][1]>=l)
s=par[s][1];
while(par[e][0]<=r)
e=par[e][0];
dfs(e,0);dfs(s,1);
for(int j=1;j<=n;j++){
if(vis[j][0]&vis[j][1])
ans[i]=1;
vis[j][0]=vis[j][1]=0;
}
}
return ans;
}
int read_int() {
int x;
if (scanf("%d", &x) != 1) {
fprintf(stderr, "Error while reading input\n");
exit(1);
}
return x;
}
int main() {
// freopen("input.in","r",stdin);
int N = read_int();
int M = read_int();
int Q = read_int();
std::vector<int> X(M), Y(M), S(Q), E(Q), L(Q), R(Q);
for (int j = 0; j < M; ++j) {
X[j] = read_int();
Y[j] = read_int();
}
for (int i = 0; i < Q; ++i) {
S[i] = read_int();
E[i] = read_int();
L[i] = read_int();
R[i] = read_int();
}
std::vector<int> A = check_validity(N, X, Y, S, E, L, R);
for (size_t i = 0; i < A.size(); ++i) {
printf("%d\n", A[i]);
}
return 0;
}