Submission #577509

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
577509	2022-06-15 00:56:34	AQT	Furniture (JOI20_furniture)	C++14	0 / 100	2 ms	852 KiB

furniture

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#include <bits/stdc++.h>
using namespace std;
int N, M;
bool tkn[1005][1005];
pair<int, int> dsu[1005][1005];
pair<int, int> getrt(pair<int, int> p) {
    auto q = dsu[p.first][p.second];
    if(q == p) {
        return q;
    }
    return dsu[p.first][p.second] = getrt(q);
}
void upd(int i, int j) {
    if(i >= 1 && i <= N && j >= 1 && j <= M) {
        if(!tkn[i][j]) {
            tkn[i][j] = 1;
            //cout << getrt(make_pair(i-1, j)).first << " " << getrt(make_pair(i-1, j)).second << " " << getrt(make_pair(i, j)).first << " " << getrt(make_pair(i, j)).second << "\n";
            if(tkn[i-1][j] && getrt(make_pair(i-1, j)) != getrt(make_pair(i, j))) {
                auto p = getrt(make_pair(i, j));
                dsu[p.first][p.second] = getrt(make_pair(i-1, j));
                //cout << "here" << endl;
            }
            if(tkn[i][j-1] && getrt(make_pair(i, j-1)) != getrt(make_pair(i, j))) {
                auto p = getrt(make_pair(i, j));
                dsu[p.first][p.second] = getrt(make_pair(i, j-1));
                //cout << "here" << endl;
 
 
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• Subtask 1: 0 / 5
• Subtask 2: 0 / 95