| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 540941 |
2022-03-22T03:12:16 Z |
hhhhaura |
Paint (COI20_paint) |
C++14 |
|
156 ms |
42576 KB |
#define wiwihorz
#include <bits/stdc++.h>
#define rep(i, a, b) for(int i = a; i <= b; i ++)
#define rrep(i, a, b) for(int i = b; i >= a; i--)
#define ceil(a, b) ((a + b - 1) / (b))
#define all(x) x.begin(), x.end()
#define int long long int
#define lld long double
#define pii pair<int, int>
#define random mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count())
#define INF 1000000000000000000
#define MOD 1000000007
#define eps (1e-9)
using namespace std;
#ifdef wiwihorz
#define print(a...)cerr<<"Line "<<__LINE__<<":",kout("["+string(#a)+"] = ", a)
void vprint(auto L,auto R){while(L<R)cerr<<*L<<" \n"[next(L)==R], ++L;}
void kout(){cerr<< endl;}
template<class T1,class ... T2>void kout(T1 a,T2 ... e){cerr<<a<<" ",kout(e...);}
#else
#define print(...) 0
#define vprint(...) 0
#endif
#define x first
#define y second
namespace solver {
int n, m, tot, ii;
const int bk = 600;
vector<vector<int>> mp;
vector<int> par, sz, rk, yes, val;
vector<map<int, vector<int>>> col;
vector<vector<int>> v, big;
void init_(int _n, int _m) {
n = _n, m = _m;
tot = n * m, ii = 0;
mp.assign(n, vector<int>(m, 0));
par.assign(tot, 0);
yes.assign(tot, 0);
iota(all(par), 0);
sz.assign(tot, 1);
rk.assign(tot, 0);
val.assign(tot, 0);
big.assign(tot, vector<int>());
v.assign(tot, vector<int>());
col.assign(tot, map<int, vector<int>>());
}
int find_par(int x) {
if(par[par[x]] == par[x]) return par[x];
else return par[x] = find_par(par[x]);
}
void to_big(int cur) {
for(auto i : v[cur]) {
if(find_par(i) == cur) continue;
int num = val[find_par(i)];
if(col[cur].find(num) == col[cur].end())
col[cur][num] = vector<int>();
col[cur][num].push_back(i);
if(!yes[cur]) big[find_par(i)].push_back(cur);
}
yes[cur] = 1;
v[cur].clear();
}
void unite(int a, int b) {
int aa = find_par(a);
int bb = find_par(b);
if(aa == bb) return;
if(rk[bb] > rk[aa]) swap(aa, bb);
rk[aa] += (rk[aa] == rk[bb]);
sz[aa] += sz[bb];
par[bb] = aa;
if(sz[aa] < sz[bb]) {
col[aa].swap(col[bb]);
v[aa].swap(v[bb]);
big[aa].swap(big[bb]);
}
for(auto i : col[bb]) {
if(col[aa].find(i.x) != col[aa].end())
for(auto j : i.y) col[aa][i.x].push_back(j);
else col[aa][i.x] = i.y;
}
col[bb].clear();
for(auto i : v[bb]) v[aa].push_back(i);
v[bb].clear();
for(auto i : big[bb]) big[aa].push_back(i);
big[bb].clear();
if(sz[aa] >= bk) to_big(aa);
}
void solve() {
vector<int> dirx = {1, 0, 0, -1};
vector<int> diry = {0, 1, -1, 0};
rep(i, 0, n - 1) rep(j, 0, m - 1) {
int cur = i * m + j;
rep(k, 0, 3) {
int nx = dirx[k] + i;
int ny = diry[k] + j;
if(nx < 0 || nx >= n) continue;
if(ny < 0 || ny >= m) continue;
v[cur].push_back(nx * m + ny);
}
val[cur] = mp[i][j];
}
rep(i, 0, n - 1) rep(j, 0, m - 1) {
int cur = i * m + j;
rep(k, 0, 3) {
int nx = dirx[k] + i;
int ny = diry[k] + j;
if(nx < 0 || nx >= n) continue;
if(ny < 0 || ny >= m) continue;
if(mp[i][j] == mp[nx][ny]) unite(cur, nx * m + ny);
}
}
int q; cin >> q;
while(q--) {
int x, y, num;
cin >> x >> y >> num;
x --, y --;
int cur = find_par(x * m + y);
vector<int> to;
if(!yes[cur]) for(auto i : v[cur])
if(val[find_par(i)] == num) to.push_back(i);
else if(col[cur].find(num) != col[cur].end()) {
for(auto i : col[cur][num]) if(val[find_par(i)] == num)
to.push_back(i);
col[cur].erase(col[cur].find(num));
}
val[cur] = num;
for(auto i : to) unite(i, cur);
cur = find_par(cur);
for(auto i : big[cur]) {
if(find_par(i) == cur) continue;
int tp = find_par(i);
if(col[tp].find(num) == col[tp].end())
col[tp][num] = vector<int>();
col[tp][num].push_back(cur);
}
}
rep(i, 0, n - 1) rep(j, 0, m - 1)
cout << val[find_par(i * m + j)] << " \n"[j + 1 == m];
}
};
using namespace solver;
signed main() {
ios::sync_with_stdio(false), cin.tie(0);
int n, m;
cin >> n >> m;
init_(n, m);
rep(i, 0, n - 1) rep(j, 0, m - 1)
cin >> mp[i][j];
solve();
return 0;
}
Compilation message
paint.cpp:17:13: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
17 | void vprint(auto L,auto R){while(L<R)cerr<<*L<<" \n"[next(L)==R], ++L;}
| ^~~~
paint.cpp:17:20: warning: use of 'auto' in parameter declaration only available with '-fconcepts-ts'
17 | void vprint(auto L,auto R){while(L<R)cerr<<*L<<" \n"[next(L)==R], ++L;}
| ^~~~
paint.cpp: In function 'void solver::solve()':
paint.cpp:119:6: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
119 | if(!yes[cur]) for(auto i : v[cur])
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
468 KB |
Output is correct |
| 2 |
Correct |
1 ms |
596 KB |
Output is correct |
| 3 |
Correct |
5 ms |
2260 KB |
Output is correct |
| 4 |
Incorrect |
7 ms |
2176 KB |
Output isn't correct |
| 5 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
67 ms |
11020 KB |
Output is correct |
| 2 |
Incorrect |
156 ms |
25928 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
98 ms |
42576 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
110 ms |
33944 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
