//Never stop trying
/*#pragma GCC target ("avx2")
#pragma GCC optimize ("Ofast")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")*/
#include "bits/stdc++.h"
using namespace std;
#define boost ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)
typedef long long ll;
typedef string str;
typedef double db;
typedef long double ld;
typedef pair<int, int> pi;
#define fi first
#define se second
typedef vector<int> vi;
typedef vector<pi> vpi;
typedef vector<str> vs;
typedef vector<ld> vd;
#define pb push_back
#define eb emplace_back
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
#define endl "\n"
#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
const int MOD = 1e9 + 7; //998244353
const ll INF = 2e9;
const int MX = 2e5 + 10;
const int nx[4] = {0, 0, 1, -1}, ny[4] = {1, -1, 0, 0}; //right left down up
template<class T> using V = vector<T>;
template<class T> bool ckmin(T& a, const T& b) { return a > b ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }
ll cdiv(ll a, ll b) { return a / b + ((a ^ b) > 0 && a % b); } // divide a by b rounded up
//constexpr int log2(int x) { return 31 - __builtin_clz(x); } // floor(log2(x))
mt19937 rng(chrono::system_clock::now().time_since_epoch().count());
//mt19937_64 rng(chrono::system_clock::now().time_since_epoch().count());
ll random(ll a, ll b){
return a + rng() % (b - a + 1);
}
#ifndef LOCAL
#define cerr if(false) cerr
#endif
#define dbg(x) cerr << #x << " : " << x << endl;
#define dbgs(x,y) cerr << #x << " : " << x << " / " << #y << " : " << y << endl;
#define dbgv(v) cerr << #v << " : " << "[ "; for(auto it : v) cerr << it << ' '; cerr << ']' << endl;
#define here() cerr << "here" << endl;
void IO() {
#ifdef LOCAL
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
#endif
}
#ifndef LOCAL
#include "werewolf.h"
#endif
vi vec;
vpi t(MX*4);
int N;
void build(int pos=1, int l=0, int r=N-1){
if(l==r){
t[pos]={vec[l],vec[l]};
return;
}
int m=(l+r)/2;
build(pos*2,l,m);
build(pos*2+1,m+1,r);
t[pos].fi=min(t[pos*2].fi,t[pos*2+1].fi);
t[pos].se=max(t[pos*2].se,t[pos*2+1].se);
}
int query(int type, int l, int r, int pos=1, int tl=0, int tr=N-1){
if(l>r){
if(type==0) return INF;
return -INF;
}
if(l==tl && r==tr){
if(type==0) return t[pos].fi;
return t[pos].se;
}
int tm=(tl+tr)/2;
if(type==0)
return min( query(type,l,min(r,tm),pos*2,tl,tm),
query(type,max(l,tm+1),r,pos*2+1,tm+1,tr) );
return max( query(type,l,min(r,tm),pos*2,tl,tm),
query(type,max(l,tm+1),r,pos*2+1,tm+1,tr) );
}
vi adj[MX];
vi check_validity(int n, vi X, vi Y, vi S, vi E, vi L, vi R){
int Q=sz(S); N=n;
FOR(i,0,sz(X)){
int u=X[i],v=Y[i];
adj[u].pb(v);
adj[v].pb(u);
}
int u,p=-1;
FOR(i,0,N) if(sz(adj[i])==1) {u=i; break;}
while(1){
vec.pb(u);
int nxt=-1;
for(auto v: adj[u]) if(v!=p) nxt=v;
if(nxt==-1) break;
p=u; u=nxt;
}
unordered_map<int,int>mp; FOR(i,0,N) mp[vec[i]]=i;
build();
vi A(Q,0);
FOR(i,0,Q){
int l=L[i],r=R[i],s=S[i],e=E[i];
if(s<l || e>r){
continue;
}
s=mp[s]; e=mp[e];
if(s<e){
int idx; //max idx such that min(s,idx)>=l
int lft=s,rgt=e-1;
while(lft<=rgt){
int m=(lft+rgt)/2;
if(query(0,s,m)>=l){
idx=m;
lft=m+1;
}
else rgt=m-1;
}
A[i]=(query(1,idx+1,e)<=r && vec[idx]<=r);
}
else{
int idx; //min idx such that min(idx,s)>=l
int lft=e+1,rgt=s;
while(lft<=rgt){
int m=(lft+rgt)/2;
if(query(0,m,s)>=l){
idx=m;
rgt=m-1;
}
else lft=m+1;
}
A[i]=(query(1,e,idx-1)<=r && vec[idx]<=r);
}
}
return A;
}
#ifdef LOCAL
int main() {
boost; IO();
int N,M,Q; cin>>N>>M>>Q;
vi x(M),y(M);
FOR(i,0,M) cin>>x[i];
FOR(i,0,M) cin>>y[i];
vi s(Q),e(Q),l(Q),r(Q);
FOR(i,0,Q) cin>>s[i];
FOR(i,0,Q) cin>>e[i];
FOR(i,0,Q) cin>>l[i];
FOR(i,0,Q) cin>>r[i];
vi vec=check_validity(N,x,y,s,e,l,r);
for(auto x: vec) cout << x << ' '; cout << endl;
return 0;
}
#endif
/*
6 6 3
5 1 1 3 3 5
1 2 3 4 0 2
4 4 5
2 2 4
1 2 3
2 2 4
*/
/* Careful!!!
.Array bounds
.Infinite loops
.Uninitialized variables / empty containers
.Multisets are shit
Some insights:
.Binary search
.Graph representation
.Write brute force code
.Change your approach
*/
Compilation message
werewolf.cpp: In function 'vi check_validity(int, vi, vi, vi, vi, vi, vi)':
werewolf.cpp:161:40: warning: 'idx' may be used uninitialized in this function [-Wmaybe-uninitialized]
161 | A[i]=(query(1,e,idx-1)<=r && vec[idx]<=r);
| ^
werewolf.cpp:148:40: warning: 'idx' may be used uninitialized in this function [-Wmaybe-uninitialized]
148 | A[i]=(query(1,idx+1,e)<=r && vec[idx]<=r);
| ^
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
7 ms |
11244 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
7 ms |
11244 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
1697 ms |
36808 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
7 ms |
11244 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
