| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 777559 |
2023-07-09T10:38:13 Z |
dozer |
Paint (COI20_paint) |
C++14 |
|
382 ms |
524288 KB |
#include <bits/stdc++.h>
using namespace std;
#define sp " "
#define endl "\n"
#define fileio() freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#define fastio() cin.tie(0), ios_base::sync_with_stdio(0)
#define pb push_back
#define pii pair<int, int>
#define st first
#define nd second
#define N 200005
const int S = 400;
vector<vector<int>> edges[N];
int sz[N], root[N], col[N];
vector<int> large[N], p[N];
vector<pii> dir;
pii rev[N];
vector<int> done[N];
vector<int> ind[N];
int all[N];
int donee[N];
int cntr;
inline int find(int node){
if (node == root[node]) return node;
return root[node] = find(root[node]);
}
inline void uni(int a, int b){
a = find(a), b = find(b);
if (a == b) return;
if (sz[a] < sz[b]) swap(a, b);
root[b] = a;
for (auto i : p[b]) p[a].pb(i);
if (sz[a] < S && sz[a] + sz[b] >= S){
edges[a].resize(N);
done[a].resize(N, -1);
done[a][a] = 1;
for (auto i : p[a]){
int x = rev[i].st, y = rev[i].nd;
int cnt = 0;
for (auto j : dir){
int k = x + j.st, l = y + j.nd;
int tmp = find(ind[k][l]);
if (tmp == 0 || tmp == a || done[a][tmp] == col[tmp]) continue;
cnt++;
edges[a][col[tmp]].pb(tmp);
done[a][tmp] = col[tmp];
large[tmp].pb(a);
}
}
}
else if (sz[a] >= S && sz[b] < S){
for (auto i : p[b]){
int cnt = 0;
int x = rev[i].st, y = rev[i].nd;
for (auto j : dir){
int k = x + j.st, l = y + j.nd;
int tmp = find(ind[k][l]);
if (tmp == 0 || done[a][tmp] == col[tmp]) continue;
edges[a][col[tmp]].pb(tmp);
large[tmp].pb(a);
done[a][tmp] = col[tmp];
cnt++;
}
}
}
else if (sz[b] >= S && sz[a] >= S) {
for (int i = 0; i < N; i++){
if (edges[a][i].size() < edges[b][i].size()) edges[a][i].swap(edges[b][i]);
for (auto j : edges[b][i])
{
edges[a][i].pb(j);
}
}
edges[b].clear();
done[b].clear();
}
vector<int> tmp;
cntr++;
for (auto i : large[a]) if (donee[find(i)] != cntr) tmp.pb(find(i)), donee[find(i)] = cntr;
for (auto i : large[b]) if (donee[find(i)] != cntr) tmp.pb(find(i)), donee[find(i)] = cntr;
large[a] = tmp;
large[b].clear();
sz[a] += sz[b];
}
inline void change_color(int node, int c){
node = find(node);
col[node] = c;
if (sz[node] >= S){
vector<int> tmp = edges[node][c];
for (auto i : tmp){
int gh = find(i);
if (col[gh] == c) uni(gh, node);
node = find(node);
}
edges[node][c].clear();
col[node] = c;
}
else{
vector<int> tmp = p[node];
for (auto i : tmp){
int cnt = 0;
int x = rev[i].st, y = rev[i].nd;
for (auto j : dir){
int k = x + j.st, l = y + j.nd;
int tmp = find(ind[k][l]);
if (tmp != node) cnt++;
if (tmp != 0 && col[tmp] == c){
uni(tmp, node);
}
node = find(node);
}
}
}
for (auto i : large[node]){
if (find(i) != node && done[find(i)][node] != c) edges[find(i)][c].pb(node);
}
col[find(node)] = c;
}
int32_t main(){
#ifndef ONLINE_JUDGE
//fileio();
#endif
fastio();
dir.pb({0, 1});
dir.pb({1, 0});
dir.pb({0, -1});
dir.pb({-1, 0});
int r, s;
cin>>r>>s;
for (int i = 0; i <= r + 5; i++) ind[i].resize(s + 5, 0);
int arr[r + 5][s + 5];
int cntr = 1;
for (int i = 1; i <= r; i++){
for (int j = 1; j <= s; j++){
cin>>arr[i][j];
ind[i][j] = cntr;
sz[cntr] = 1;
p[cntr].pb(cntr);
col[cntr] = arr[i][j];
root[cntr] = cntr;
rev[cntr] = {i, j};
cntr++;
}
}
for (int i = 1; i <= r; i++){
for (int j = 1; j <= s; j++){
for (auto k : dir){
int x = i + k.st, y = j + k.nd;
if (ind[x][y] == 0) continue;
if (arr[x][y] == arr[i][j]) uni(ind[i][j], ind[x][y]);
}
}
}
int q;
cin>>q;
while(q--){
int x, y, c;
cin>>x>>y>>c;
change_color(ind[x][y], c);
}
for (int i = 1; i <= r; i++){
for(int j = 1; j <= s; j++)
cout<<col[find(ind[i][j])]<<sp;
cout<<endl;
}
cerr<<"time taken : "<<(float)clock() / CLOCKS_PER_SEC<<" seconds\n";
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
13 ms |
23764 KB |
Output is correct |
| 2 |
Correct |
12 ms |
23892 KB |
Output is correct |
| 3 |
Correct |
15 ms |
24404 KB |
Output is correct |
| 4 |
Correct |
19 ms |
29828 KB |
Output is correct |
| 5 |
Correct |
19 ms |
30420 KB |
Output is correct |
| 6 |
Correct |
27 ms |
46544 KB |
Output is correct |
| 7 |
Correct |
13 ms |
23772 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
51 ms |
29096 KB |
Output is correct |
| 2 |
Correct |
335 ms |
452900 KB |
Output is correct |
| 3 |
Correct |
107 ms |
57764 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
128 ms |
74764 KB |
Output is correct |
| 2 |
Correct |
119 ms |
78180 KB |
Output is correct |
| 3 |
Correct |
145 ms |
124168 KB |
Output is correct |
| 4 |
Correct |
335 ms |
424968 KB |
Output is correct |
| 5 |
Correct |
266 ms |
342152 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
115 ms |
61620 KB |
Output is correct |
| 2 |
Correct |
190 ms |
57268 KB |
Output is correct |
| 3 |
Runtime error |
382 ms |
524288 KB |
Execution killed with signal 9 |
| 4 |
Halted |
0 ms |
0 KB |
- |
