#include "rainbow.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/rope>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
random_device(rd);
mt19937 rng(rd());
const long long FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
struct custom_hash
{
template<class T>
unsigned long long operator()(T v) const
{
unsigned long long x = v;
x += FIXED_RANDOM; x += 11400714819323198485ull;
x = (x ^ (x >> 30)) * 13787848793156543929ull;
x = (x ^ (x >> 27)) * 10723151780598845931ull;
return x ^ (x >> 31);
}
};
template<class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<class T, class U> using hash_table = gp_hash_table<T, U, custom_hash>;
template<class T>
void ckmin(T &a, T b)
{
a = min(a, b);
}
template<class T>
void ckmax(T &a, T b)
{
a = max(a, b);
}
long long expo(long long a, long long e, long long mod)
{
return ((e == 0) ? 1 : ((expo(a * a % mod, e >> 1, mod)) * ((e & 1) ? a : 1) % mod));
}
template<class T, class U>
T nmod(T &x, U mod)
{
if (x >= mod) x -= mod;
}
template<class T>
T gcd(T a, T b)
{
return (b ? gcd(b, a % b) : a);
}
template<class T>
T randomize(T mod)
{
return (uniform_int_distribution<T>(0, mod - 1))(rng);
}
#define y0 ___y0
#define y1 ___y1
#define MP make_pair
#define MT make_tuple
#define PB push_back
#define PF push_front
#define fi first
#define se second
#define debug(x) cerr << #x << " = " << x << endl;
#define sz(x) ((int) (x.size()))
const long double PI = 4.0 * atan(1.0);
const long double EPS = 1e-9;
#define MAGIC 347
#define SINF 10007
#define CO 1000007
#define INF 1000000007
#define BIG 1000000931
#define LARGE 1696969696967ll
#define GIANT 2564008813937411ll
#define LLINF 2696969696969696969ll
#define MAXN 400013
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<ld, ld> pdd;
int N;
struct pseg
{
struct node
{
node *ch[2];
ll stor;
node()
{
ch[0] = ch[1] = nullptr;
stor = 0;
}
};
int T;
node *root[MAXN];
int ft[MAXN];
vector<pair<ll, int> > updates[MAXN];
ll DNE = 0;
ll comb(ll a, ll b)
{
return a + b;
}
node* build(int L, int R)
{
node* t = new node();
if (L == R) return t;
int mid = (L + R) >> 1;
t -> ch[0] = build(L, mid);
t -> ch[1] = build(mid + 1, R);
return t;
}
node *update(node *w, int L, int R, int a, ll v)
{
if (a < L || R < a)
{
return w;
}
node *t = new node();
if (L == R)
{
t -> stor = w -> stor + v;
return t;
}
int mid = (L + R) >> 1;
t -> ch[0] = update(w -> ch[0], L, mid, a, v);
t -> ch[1] = update(w -> ch[1], mid + 1, R, a, v);
t -> stor = comb(t -> ch[0] -> stor, t -> ch[1] -> stor);
return t;
}
ll query(node *w, int L, int R, int a, int b)
{
if (b < L || R < a)
{
return DNE;
}
if (a <= L && R <= b)
{
return w -> stor;
}
int mid = (L + R) >> 1;
return query(w -> ch[0], L, mid, a, b) + query(w -> ch[1], mid + 1, R, a, b);
}
void process()
{
root[0] = build(0, N);
ft[0] = 0;
for (int i = 1; i <= N; i++)
{
for (auto p : updates[i])
{
ll v = p.fi; int idx = p.se;
T++; root[T] = update(root[T - 1], 0, N, idx, v);
}
ft[i] = T;
}
}
ll sum(int t, int L, int R)
{
return query(root[ft[t]], 0, N, L, R);
}
ll rect(int x0, int x1, int y0, int y1)
{
if (x0 > x1 || y0 > y1) return 0;
return query(root[ft[x1]], 0, N, y0, y1) - query(root[ft[x0 - 1]], 0, N, y0, y1);
}
};
pseg tseg, fseg, hseg, vseg, dseg, useg;
set<pii> s;
vector<pii> pts, face, hor, vert, dn, up;
void prep()
{
for (pii p : s)
{
int x = p.fi, y = p.se;
bool go[2][2];
for (int i = 0; i < 2; i++)
{
for (int j = 0; j < 2; j++)
{
go[i][j] = true;
if (s.find({x + i, y + j}) == s.end()) go[i][j] = false;
}
}
pts.PB({x, y});
if (go[0][1] && go[1][0] && go[1][1]) face.PB({x, y});
if (go[1][0]) vert.PB({x, y});
if (go[0][1]) hor.PB({x, y});
if (go[1][1] && !go[0][1] && !go[1][0]) dn.PB({x, y});
if (s.find({x - 1, y + 1}) != s.end() && s.find({x - 1, y}) == s.end() && !go[0][1]) up.PB({x, y});
}
for (pii p : pts) tseg.updates[p.fi].PB({1, p.se}); tseg.process();
for (pii p : face) fseg.updates[p.fi].PB({1, p.se}); fseg.process();
for (pii p : hor) hseg.updates[p.fi].PB({1, p.se}); hseg.process();
for (pii p : vert) vseg.updates[p.fi].PB({1, p.se}); vseg.process();
for (pii p : dn) dseg.updates[p.fi].PB({1, p.se}); dseg.process();
for (pii p : up) useg.updates[p.fi].PB({1, p.se}); useg.process();
}
void init(int R, int C, int x, int y, int K, char *S)
{
N = max(R, C) + 2;
s.insert({x, y});
for (int i = 0; i < K; i++)
{
if (S[i] == 'N') x--;
if (S[i] == 'S') x++;
if (S[i] == 'E') y++;
if (S[i] == 'W') y--;
s.insert({x, y});
}
prep();
}
ll x0, x1, y0, y1;
ll edges()
{
ll res = 0;
res += vseg.rect(x0, x1 - 1, y0, y1) + (x1 - x0 + 2) * 2 + tseg.rect(x0, x0, y0, y1) + tseg.rect(x1, x1, y0, y1);
// cerr << "alive\n";
res += hseg.rect(x0, x1, y0, y1 - 1) + (y1 - y0 + 2) * 2 + tseg.rect(x0, x1, y0, y0) + tseg.rect(x0, x1, y1, y1);
res += dseg.rect(x0, x1 - 1, y0, y1 - 1) + useg.rect(x0 + 1, x1, y0, y1 - 1);
cerr << "edges " << res << endl;
return res;
}
ll vertices()
{
ll res = 0;
res = tseg.rect(x0, x1, y0, y1) + (x1 - x0 + 2) * 2 + (y1 - y0 + 2) * 2;
cerr << "vertices " << res << endl;
return res;
}
ll faces()
{
ll res = 0;
res = fseg.rect(x0, x1 - 1, y0, y1 - 1);
for (int i = x0; i < x1; i++)
{
if (s.find({i, y0}) != s.end() && s.find({i + 1, y0}) != s.end()) res++;
if (s.find({i, y1}) != s.end() && s.find({i + 1, y1}) != s.end()) res++;
}
for (int i = y0; i < y1; i++)
{
if (s.find({x0, i}) != s.end() && s.find({x0, i + 1}) != s.end()) res++;
if (s.find({x1, i}) != s.end() && s.find({x1, i + 1}) != s.end()) res++;
}
if (s.find({x0, y0}) != s.end()) res++;
if (s.find({x1, y0}) != s.end()) res++;
if (s.find({x0, y1}) != s.end()) res++;
if (s.find({x1, y1}) != s.end()) res++;
cerr << "faces " << res << endl;
return res;
}
int colour(int _x0, int _y0, int _x1, int _y1)
{
x0 = _x0; x1 = _x1; y0 = _y0; y1 = _y1;
if (tseg.rect(x0, x1, y0, y1) == 0) return 1;
ll ans = tseg.rect(x0, x1, y0, y1) - tseg.rect(x0 + 1, x1 - 1, y0 + 1, y1 - 1);
ans = (ans ? 1 : 0);
cerr << "bads " << ans << endl;
// debug(edges()); debug(vertices()); debug(faces()); debug(ans);
// cerr << "ans = " << ans << endl;
ans = edges() - vertices() - faces() + 2 - ans;
return ans;
}
Compilation message
rainbow.cpp: In function 'void prep()':
rainbow.cpp:204:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
for (pii p : pts) tseg.updates[p.fi].PB({1, p.se}); tseg.process();
^~~
rainbow.cpp:204:54: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
for (pii p : pts) tseg.updates[p.fi].PB({1, p.se}); tseg.process();
^~~~
rainbow.cpp:205:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
for (pii p : face) fseg.updates[p.fi].PB({1, p.se}); fseg.process();
^~~
rainbow.cpp:205:55: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
for (pii p : face) fseg.updates[p.fi].PB({1, p.se}); fseg.process();
^~~~
rainbow.cpp:206:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
for (pii p : hor) hseg.updates[p.fi].PB({1, p.se}); hseg.process();
^~~
rainbow.cpp:206:54: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
for (pii p : hor) hseg.updates[p.fi].PB({1, p.se}); hseg.process();
^~~~
rainbow.cpp:207:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
for (pii p : vert) vseg.updates[p.fi].PB({1, p.se}); vseg.process();
^~~
rainbow.cpp:207:55: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
for (pii p : vert) vseg.updates[p.fi].PB({1, p.se}); vseg.process();
^~~~
rainbow.cpp:208:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
for (pii p : dn) dseg.updates[p.fi].PB({1, p.se}); dseg.process();
^~~
rainbow.cpp:208:53: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
for (pii p : dn) dseg.updates[p.fi].PB({1, p.se}); dseg.process();
^~~~
rainbow.cpp:209:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
for (pii p : up) useg.updates[p.fi].PB({1, p.se}); useg.process();
^~~
rainbow.cpp:209:53: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
for (pii p : up) useg.updates[p.fi].PB({1, p.se}); useg.process();
^~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
78 ms |
56952 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
54 ms |
56976 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
55 ms |
56976 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
78 ms |
56952 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
78 ms |
56952 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
