QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#162137 | #7105. Pixel Art | ucup-team1198# | AC ✓ | 729ms | 67424kb | C++20 | 5.5kb | 2023-09-03 04:41:12 | 2023-09-04 04:31:15 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
#define ld long double
#define all(a) (a).begin(), (a).end()
const int MAXN = 100'100;
const int MAXV = 6 * MAXN;
vector<int> G[MAXV];
bool black[MAXV];
int par[MAXV];
int get(int v) {
if (par[v] == v)
return v;
return par[v] = get(par[v]);
}
bool merge(int v, int u) {
v = get(v);
u = get(u);
if (v == u)
return false;
par[v] = u;
return true;
}
pair<int, int> points[MAXV];
vector<pair<int, int>> points_by_x[MAXN];
vector<pair<int, int>> points_by_y[MAXN];
int all_y[MAXV];
vector<pair<pair<int, int>, pair<int, int>>> segms;
vector<pair<int, pair<int, int>>> events;
void solve() {
int n, m, k;
cin >> n >> m >> k;
int points_cnt = 0;
auto add_point = [&](int x, int y) {
if (x == 0 || x == n + 1 || y == 0 || y == m + 1)
return;
points[points_cnt] = make_pair(x, y);
++points_cnt;
};
segms.resize(k);
for (int i = 0; i < k; ++i) {
int r1, c1, r2, c2;
cin >> r1 >> c1 >> r2 >> c2;
//r1 = i + 1, c1 = rand() % m + 1, r2 = i + 1, c2 = rand() % m + 1;
if (make_pair(r1, c1) > make_pair(r2, c2)) {
swap(r1, r2);
swap(c1, c2);
}
segms[i] = make_pair(make_pair(r1, c1), make_pair(r2, c2));
add_point(r1, c1);
add_point(r2, c2);
if (c1 == c2) {
add_point(r1, c1 - 1);
add_point(r1, c1 + 1);
add_point(r1 - 1, c1);
add_point(r2 + 1, c2);
} else {
add_point(r1 - 1, c1);
add_point(r1 + 1, c1);
add_point(r1, c1 - 1);
add_point(r1, c2 + 1);
}
}
sort(points, points + points_cnt);
points_cnt = unique(points, points + points_cnt) - points;
for (int i = 0; i < points_cnt; ++i) {
auto [x, y] = points[i];
all_y[i] = y;
points_by_x[x].emplace_back(y, i);
points_by_y[y].emplace_back(x, i);
}
sort(all_y, all_y + points_cnt);
int all_y_cnt = unique(all_y, all_y + points_cnt) - all_y;
auto add_edge = [](int a, int b) {
G[max(a, b)].emplace_back(min(a, b));
};
fill(black, black + points_cnt, false);
events.clear();
for (int i = 0; i < k; ++i) {
auto [p1, p2] = segms[i];
auto [r1, c1] = p1;
auto [r2, c2] = p2;
if (c1 == c2) {
vector<pair<int, int>>& xs = points_by_y[c1];
int i1 = lower_bound(xs.begin(), xs.end(), make_pair(r1, 0)) - xs.begin();
int i2 = lower_bound(xs.begin(), xs.end(), make_pair(r2, 0)) - xs.begin();
for (int j = i1; j < i2; ++j) {
if (xs[j].first + 1 != xs[j + 1].first)
add_edge(xs[j].second, xs[j + 1].second);
}
for (int j = i1; j <= i2; ++j)
black[xs[j].second] = true;
events.emplace_back(r1, make_pair(1, 1));
events.emplace_back(r2, make_pair(0, -1));
} else {
events.emplace_back(r1, make_pair(c2 - c1 + 1, 0));
vector<pair<int, int>>& ys = points_by_x[r1];
int i1 = lower_bound(ys.begin(), ys.end(), make_pair(c1, 0)) - ys.begin();
int i2 = lower_bound(ys.begin(), ys.end(), make_pair(c2, 0)) - ys.begin();
for (int j = i1; j < i2; ++j) {
if (ys[j].first + 1 != ys[j + 1].first)
add_edge(ys[j].second, ys[j + 1].second);
}
for (int j = i1; j <= i2; ++j)
black[ys[j].second] = true;
}
}
for (int x = 1; x <= n; ++x) {
vector<pair<int, int>>& ys = points_by_x[x];
for (int j = 0; j + 1 < ys.size(); ++j) {
if (ys[j].first + 1 == ys[j + 1].first && black[ys[j].second] && black[ys[j + 1].second]) {
add_edge(ys[j].second, ys[j + 1].second);
}
}
}
for (int i = 0; i < all_y_cnt; ++i) {
int y = all_y[i];
vector<pair<int, int>>& xs = points_by_y[y];
for (int j = 0; j + 1 < xs.size(); ++j) {
if (xs[j].first + 1 == xs[j + 1].first && black[xs[j].second] && black[xs[j + 1].second]) {
add_edge(xs[j].second, xs[j + 1].second);
}
}
}
iota(par, par + points_cnt, 0);
int cur = 0;
long long cur_sum = 0;
long long cur_mod = 0;
sort(events.begin(), events.end());
int ev_id = 0;
for (int i = 1; i <= n; ++i) {
cur_sum += cur_mod;
while (ev_id < events.size() && events[ev_id].first == i) {
cur_sum += events[ev_id].second.first;
cur_mod += events[ev_id].second.second;
++ev_id;
}
vector<pair<int, int>>& ys = points_by_x[i];
for (auto [y, j] : ys) {
if (!black[j])
continue;
++cur;
//cerr << "new " << j << '\n';
for (int u : G[j]) {
//cerr << "merge " << u << ' ' << j << '\n';
cur -= merge(u, j);
}
}
cout << cur_sum << ' ' << cur << '\n';
}
for (int i = 0; i < points_cnt; ++i)
G[i].clear();
for (int x = 1; x <= n; ++x)
points_by_x[x].clear();
for (int i = 0; i < all_y_cnt; ++i)
points_by_y[all_y[i]].clear();
//cerr << '\n';
}
signed main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
int t;
cin >> t;
while (t--) {
solve();
}
//cerr << clock() * 1.0 / CLOCKS_PER_SEC << '\n';
return 0;
}
这程序好像有点Bug,我给组数据试试?
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 27012kb
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 5 2 3 1 6 1 3 1 4 1 6 2
result:
ok 7 lines
Test #2:
score: 0
Accepted
time: 729ms
memory: 67424kb
input:
2130 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 3 100 51 1 2 2 2 1 4 2 4 1 6 2 6 1 8 2 8 1 10 2 10 1 12 2 12 1 14 2 14 1 16 2 16 1 18 2 18 1 20 2 20 1 22 2 22 1 24 2 24 1 26 2 26 1 28 2 28 1 30 2 30 1 32 2 32 1 34 2 34 1 36 2 36 1 38 2 38 1 40 2 40 1 42 2 42 1 44 2 44 ...
output:
2 1 5 2 3 1 6 1 3 1 4 1 6 2 50 50 100 50 200 1 50 50 150 1 200 1 2 1 4 1 6 1 8 1 10 1 12 1 14 1 16 1 18 1 20 1 22 1 24 1 26 1 28 1 30 1 32 1 34 1 36 1 38 1 40 1 42 1 44 1 46 1 48 1 50 1 52 1 54 1 56 1 58 1 60 1 62 1 64 1 66 1 68 1 70 1 72 1 74 1 76 1 78 1 80 1 82 1 84 1 86 1 88 1 90 1 92 1 94 1 96 1...
result:
ok 355756 lines
Extra Test:
score: 0
Extra Test Passed