Submission #920483

#	Time	Username	Problem	Language	Result	Execution time	Memory
920483		ErJ	Paint (COI20_paint)	C++17	8 / 100	349 ms	4188 KiB

paint

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define vi vector<ll>
#define vvi vector<vector<ll>>
#define vs vector<string>
#define vc vector<char>
#define vb vector<bool>
#define vp vector<pair<ll, ll>>
#define pp pair<ll, ll>
#define qi queue<ll>
#define qp queue<pp>
#define pqi priority_queue<ll>
#define pqp priority_queue<pp>
#define mi map<ll, ll>
#define mpi map<pp, ll>
#define mip map<ll, pp>
#define mpp map<pp, pp>
#define mb map<ll, bool>
#define si set<ll>
#define sp set<pp>
#define mod 1000000007
#define rep(a, b) for(int a = 0; a < (b); a++)
#define inf 1000000000000000000

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int r, s, q;
    cin >> r >> s;
    vvi table(r);
    for (int i = 0; i < r; i++) {
        table[i].resize(s);
        for (int j = 0; j < s; j++) {
            cin >> table[i][j];
        }
    }
    cin >> q;
    vector<pair<pp, int>> quest(q);
    rep(i, q) {
        int a, b, c;
        cin >> a >> b >> c;
        a--; b--;
        quest[i] = { {a, b}, c };
    }
    vp sousedi = { {1, 0}, {-1, 0}, {0, 1}, {0, -1} };
    if ((r * s <= 10000) && (q <= 10000)) {
        for(int i = 0; i < q; i++){
            queue<pp> fronta;
            fronta.push(quest[i].first);
            int xx = table[quest[i].first.first][quest[i].first.second];
            if (xx == quest[i].second) continue;
            while (!fronta.empty()) {
                pp u = fronta.front();
                table[u.first][u.second] = quest[i].second;
                fronta.pop();
                for (auto j : sousedi) {
                    if ((u.first + j.first) < r && (u.first + j.first) >= 0 && (u.second + j.second) < s && (u.second + j.second) >= 0) {
                        if (table[u.first + j.first][u.second + j.second] == xx) {
                            fronta.push({ u.first + j.first, u.second + j.second });
                            table[u.first + j.first][u.second + j.second] = quest[i].second;
                        }
                    }
                }
            }
        }
        rep(i, r) {
            rep(j, s - 1) {
                cout << table[i][j] << " ";
            }
            cout << table[i][s - 1] << endl;
        }
    }
}

• Subtask 1: 8 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 31
• Subtask 4: 0 / 52