結果
| 問題 |
No.307 最近色塗る問題多くない?
|
| コンテスト | |
| ユーザー |
cormoran
|
| 提出日時 | 2016-03-01 22:28:14 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 4,629 bytes |
| コンパイル時間 | 1,261 ms |
| コンパイル使用メモリ | 95,596 KB |
| 実行使用メモリ | 14,008 KB |
| 最終ジャッジ日時 | 2024-09-24 13:15:57 |
| 合計ジャッジ時間 | 13,505 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 11 WA * 19 TLE * 1 -- * 5 |
ソースコード
// yukicoder - - 307 / 2016-03-01
#include<iostream>
#include<vector>
#include<cassert>
#include<string>
#include<algorithm>
#include<cstdio>
#include<cstdlib>
#include<cmath>
#include<stack>
#include<queue>
#include<set>
#include<map>
#include<tuple>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
typedef ll int__;
#define rep(i,j) for(int__ i=0;i<(int__)(j);i++)
#define repeat(i,j,k) for(int__ i=(j);i<(int__)(k);i++)
#define all(v) v.begin(),v.end()
template<typename T>ostream& operator << (ostream &os , const vector<T> &v){
rep(i,v.size()) os << v[i] << (i!=v.size()-1 ? " " : "\n"); return os;
}
template<typename T>istream& operator >> (istream &is , vector<T> &v){
rep(i,v.size()) is >> v[i]; return is;
}
#ifdef DEBUG
void debug(){ cerr << endl; }
#endif
template<class F,class...R> void debug(const F &car,const R&... cdr){
#ifdef DEBUG
cerr << car << " "; debug(cdr...);
#endif
}
const int dx[] = { 0, 1, 0, -1};
const int dy[] = {-1, 0, 1, 0};
struct UnionFind{
int n;
vector<int> p;
UnionFind(int nn):n(nn+1){
p.resize(n);
rep(i,n) p[i] = i;
}
int root(int x){
if(p[x] == x) return x;
else return p[x] = root(p[x]);
}
void unite(int x,int y){
x = root(x);
y = root(y);
if(x != y) p[y] = x;
}
bool query(int x,int y){
return root(x) == root(y);
}
};
// ---------- --------- ---------
int H, W;
vector<vector<int>> G;
int ptoi(int x, int y){
return y * W + x;
}
bool is_in_field(int x, int y){
return 0 <= x and x < W and 0 <= y and y < H;
}
void scroll(UnionFind &ut, vector<int> color, int x, int y){
int xx = x, yy = y;
// up!
while(true){
int nx = x + dx[0];
int ny = y + dy[0];
if(is_in_field(nx, ny) and ut.query(ptoi(x,y), ptoi(nx,ny))){
x = nx;
y = ny;
} else break;
}
vector<vector<bool>> visited(H, vector<bool>(W));
int nxt_dir = 0;
stack<int> merge;
// walk boundary
while(true){
if(visited[y][x]){
rep(i, 2){
int nx1 = x + dx[i], nx2 = x + dx[(i+2)%4];
int ny1 = y + dy[i], ny2 = y + dy[(i+2)%4];
if(not( is_in_field(nx1, ny1) and
ut.query(ptoi(x,y),ptoi(nx1,ny1))) and
not( is_in_field(nx2, ny2) and
ut.query(ptoi(x,y),ptoi(nx2,ny2)))
){
rep(j, 2){
int nx = x + dx[(i+1+2*j)%4], ny = y + dy[(i+1+2*j)%4];
if(is_in_field(nx, ny) and not visited[ny][nx]){
x = nx;
y = ny;
goto START;
}
}
}
}
break;
}
START:
visited[y][x] = true;
rep(d, 4){
int nd = (nxt_dir + d) % 4;
int nx = x + dx[nd];
int ny = y + dy[nd];
if(is_in_field(nx, ny)){
if(ut.query(ptoi(x,y),ptoi(nx,ny))){
x = nx;
y = ny;
nxt_dir = (nd + 3) % 4;
break;
} else {
if(color[ut.root(ptoi(x,y))] == color[ut.root(ptoi(nx,ny))]){
merge.push(ptoi(nx,ny));
}
}
}
}
}
while(not merge.empty()){
ut.unite(ptoi(xx, yy), merge.top());
merge.pop();
}
}
bool solve(){
cin >> H >> W;
G.resize(H, vector<int>(W));
rep(i, H) cin >> G[i];
UnionFind ut(H*W);
vector<int> color(H*W);
rep(y, H) rep(x, W) color[ptoi(x, y)] = G[y][x];
rep(y,H){
rep(x, W){
rep(dir, 4){
int nx = x + dx[dir];
int ny = y + dy[dir];
if(0 <= nx and nx < W and
0 <= ny and ny < H){
if(G[y][x] == G[ny][nx]){
ut.unite(ptoi(x, y), ptoi(nx, ny));
}
}
}
}
}
int Q; cin >> Q;
rep(i, Q){
int y, x, c; cin >> y >> x >> c;
y--; x--;
int p = ptoi(x, y);
color[ut.root(p)] = c;
scroll(ut, color, x, y);
}
rep(y, H){
rep(x, W){
cout << color[ut.root(ptoi(x, y))] << (x != W-1 ? " " : "\n");
}
}
return false;
}
int main()
{
ios::sync_with_stdio(false);
while(solve());
return 0;
}
cormoran