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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#160623 | #7105. Pixel Art | ucup-team1469# | WA | 1ms | 3664kb | C++17 | 6.9kb | 2023-09-02 20:59:23 | 2023-09-02 20:59:24 |
Judging History
answer
#ifndef LOCAL
#define FAST_IO
#endif
// ============
#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cmath>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#define OVERRIDE(a, b, c, d, ...) d
#define REP2(i, n) for (i32 i = 0; i < (i32)(n); ++i)
#define REP3(i, m, n) for (i32 i = (i32)(m); i < (i32)(n); ++i)
#define REP(...) OVERRIDE(__VA_ARGS__, REP3, REP2)(__VA_ARGS__)
#define PER(i, n) for (i32 i = (i32)(n) - 1; i >= 0; --i)
#define ALL(x) begin(x), end(x)
using namespace std;
using u32 = unsigned int;
using u64 = unsigned long long;
using i32 = signed int;
using i64 = signed long long;
using f64 = double;
using f80 = long double;
template <typename T>
using Vec = vector<T>;
template <typename T>
bool chmin(T &x, const T &y) {
if (x > y) {
x = y;
return true;
}
return false;
}
template <typename T>
bool chmax(T &x, const T &y) {
if (x < y) {
x = y;
return true;
}
return false;
}
#ifdef INT128
using u128 = __uint128_t;
using i128 = __int128_t;
istream &operator>>(istream &is, i128 &x) {
i64 v;
is >> v;
x = v;
return is;
}
ostream &operator<<(ostream &os, i128 x) {
os << (i64)x;
return os;
}
istream &operator>>(istream &is, u128 &x) {
u64 v;
is >> v;
x = v;
return is;
}
ostream &operator<<(ostream &os, u128 x) {
os << (u64)x;
return os;
}
#endif
[[maybe_unused]] constexpr i32 INF = 1000000100;
[[maybe_unused]] constexpr i64 INF64 = 3000000000000000100;
struct SetUpIO {
SetUpIO() {
#ifdef FAST_IO
ios::sync_with_stdio(false);
cin.tie(nullptr);
#endif
cout << fixed << setprecision(15);
}
} set_up_io;
// ============
#ifdef DEBUGF
#else
#define DBG(x) (void)0
#endif
// ============
#include <cassert>
#include <utility>
#include <vector>
class UnionFind {
std::vector<int> par;
int _root(int v) {
if (par[v] < 0) {
return v;
} else {
return par[v] = _root(par[v]);
}
}
public:
UnionFind(int n) : par(n, -1) {}
int root(int v) {
assert(v >= 0 && v < (int) par.size());
return _root(v);
}
int size(int v) {
assert(v >= 0 && v < (int) par.size());
return -par[_root(v)];
}
bool unite(int u, int v) {
assert(u >= 0 && u < (int) par.size() && v >= 0 && v < (int) par.size());
u = _root(u);
v = _root(v);
if (u == v) {
return false;
}
if (par[u] < par[v]) {
std::swap(u, v);
}
par[v] += par[u];
par[u] = v;
return true;
}
bool same(int u, int v) {
assert(u >= 0 && u < (int) par.size() && v >= 0 && v < (int) par.size());
return _root(u) == _root(v);
}
};
// ============
void solve() {
i32 n, m, k;
cin >> n >> m >> k;
Vec<tuple<i32, i32, i32, i32>> lines(k);
for (auto &[a, b, c, d] : lines) {
cin >> a >> b >> c >> d;
--a;
--b;
--c;
--d;
}
Vec<Vec<pair<i32, i32>>> vert(n);
Vec<Vec<pair<i32, i32>>> horz(m);
for (auto [a, b, c, d] : lines) {
if (a == c) {
horz[a].emplace_back(b, d + 1);
} else {
vert[a].emplace_back(b, c + 1);
}
}
Vec<pair<i32, i32>> pts;
const i32 dx[] = {1, 0, -1, 0, 0}, dy[] = {0, 1, 0, -1, 0};
for (auto [a, b, c, d] : lines) {
REP(dir, 5) {
i32 x = a + dx[dir], y = b + dy[dir];
if (0 <= x && x < n && 0 <= y && y < m) {
pts.emplace_back(x, y);
}
x = c + dx[dir], y = d + dy[dir];
if (0 <= x && x < n && 0 <= y && y < m) {
pts.emplace_back(x, y);
}
}
}
sort(ALL(pts));
pts.erase(unique(ALL(pts)), pts.end());
Vec<Vec<pair<i32, i32>>> yoko(n), tate(m);
REP(i, pts.size()) {
yoko[pts[i].first].push_back(pts[i]);
tate[pts[i].second].push_back(pts[i]);
}
REP(i, m) {
sort(ALL(tate[i]));
}
UnionFind uf(pts.size());
Vec<i32> add(n + 2, 0);
REP(i, n) {
for (auto [l, r] : horz[i]) {
add[i] += r - l;
add[i + 1] -= r - l;
}
for (auto [a, b] : vert[i]) {
add[i] += 1;
add[b] -= 1;
}
}
REP(i, n) {
add[i + 1] += add[i];
}
Vec<i32> alive(pts.size(), 0);
i32 comp = 0;
const auto create = [&](i32 x) -> void {
if (!alive[x]) {
++comp;
alive[x] = 1;
}
};
const auto unite = [&](i32 x, i32 y) -> void {
if (uf.unite(x, y)) {
--comp;
}
};
const auto idx = [&](pair<i32, i32> x) -> i32 {
return lower_bound(ALL(pts), x) - pts.begin();
};
REP(i, n) {
for (auto [l, r] : horz[i]) {
auto it = lower_bound(ALL(yoko[i]), make_pair(i, l));
i32 prv = -1;
while (it != yoko[i].end() && it->second < r) {
i32 j = idx(*it);
create(j);
if (prv != -1) {
unite(prv, j);
}
REP(dir, 4) {
pair<i32, i32> pt(it->first + dx[dir], it->second + dy[dir]);
if (binary_search(ALL(pts), pt)) {
i32 k = idx(pt);
if (alive[k]) {
unite(j, k);
}
}
}
prv = j;
++it;
}
}
for (auto [y, to] : vert[i]) {
auto it = lower_bound(ALL(tate[y]), make_pair(i, y));
i32 prv = -1;
while (it != tate[y].end() && it->first < to) {
i32 j = idx(*it);
create(j);
if (prv != -1) {
unite(prv, j);
}
REP(dir, 4) {
pair<i32, i32> pt(it->first + dx[dir], it->second + dy[dir]);
if (binary_search(ALL(pts), pt)) {
i32 k = idx(pt);
if (alive[k]) {
unite(j, k);
}
}
}
prv = j;
++it;
}
}
cout << add[i] << ' ' << comp << '\n';
}
}
int main() {
i32 t;
cin >> t;
while (t--) {
solve();
}
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 0
Wrong Answer
time: 1ms
memory: 3664kb
input:
3 2 5 2 1 1 1 2 2 3 2 5 2 5 2 1 1 1 3 2 3 2 5 3 3 3 1 1 1 2 3 1 3 2 1 3 2 3
output:
2 1 3 2 3 1 3 1 3 1 1 1 2 2
result:
wrong answer 2nd lines differ - expected: '5 2', found: '3 2'