Submission #381349

#	Time	Username	Problem	Language	Result	Execution time	Memory
381349		Slavita	Paint (COI20_paint)	C++14	0 / 100	3080 ms	71828 KiB

paint

#include <bits/stdc++.h>
#define ve vector<int>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define pi pair<int,int>
#define all(v) v.begin(),v.end()
#define si(v) (int)v.size()
#define en '\n'
using namespace std;
typedef long long ll;
typedef unsigned long long ull;

const int N = 2e5 + 228;
const int big = 1e9;
int n, m, b[N], curCol;
map<pi, int> a;
map<pi, int> re;
map<pi, bool> mrk;
queue<int> X, Y;

void create(int i, int j, int &kol){
    kol++;
    a[mp(i, j)] = kol;
    b[kol] = re[mp(i, j)];
}

void update(int i0, int j0, int i, int j){
    a[mp(i, j)] = a[mp(i0, j0)];
}

void check(int i, int j, int i2, int j2){
    if (j2 >= 1 && j2 <= m && i2 >= 1 && i2 <= n && b[a[mp(i2, j2)]] == re[mp(i, j)])
        update(i2, j2, i, j);
}

void first(int x, int y, int &kol){
    X.push(x); Y.push(y);
    create(x, y, kol);
}

void put(int x, int y, int kol){
    if (x < 1 || x > n || y < 1 || y > m) return;
    if (mrk[mp(x, y)]) return;
    if (re[mp(x, y)] != curCol) return;
    a[mp(x, y)] = kol;
    X.push(x); Y.push(y);
    mrk[mp(x, y)] = 1;
}

void go(int x, int y, int kol){
    int st[4][2] = {{1, 0}, {-1, 0}, {0, 1}, {0, -1}};
    for (int i = 0; i < 4; i++) {
        put(x + st[i][0], y + st[i][1], kol);
    }
}

int main(){
    iostream::sync_with_stdio(false); cin.tie(0); ios_base::sync_with_stdio(false); cout.tie(0);
    //freopen("input.txt","r",stdin);
    //freopen("output.txt","w",stdout);
    cin >> n >> m;
    int kol = 0;
    for (int i = 1; i <= n; i++){
        for (int j = 1; j <= m; j++){
            int x; cin >> x;
            re[mp(i, j)] = x;
        }
    }
    //first(1, 1, kol);
    for (int i = 1; i <= n; i++){
        for (int j = 1; j <= m; j++){
            if (mrk[mp(i, j)]) continue;
            first(i, j, kol);
            curCol = b[a[mp(i, j)]];
            while(!X.empty()){
                int x = X.front(); X.pop();
                int y = Y.front(); Y.pop();
                go(x, y, kol);
            }
        }
    }
    /*for (int i = 1; i <= kol; i++){
        cout << b[i] << en;
    }*/
    int q;
    cin >> q;
    while(q--){
        int x, y, col;
        cin >> x >> y >> col;
        b[a[mp(x, y)]] = col;
        cout << en << en;
        for (int i = 1; i <= n; i++){
            for (int j = 1; j <= m; j++){
                cout << b[a[mp(i, j)]] << ' ';
            }
            cout << en;
        }
    }
    return 0;
}

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