Submission #1121225

#	Time	Username	Problem	Language	Result	Execution time	Memory
1121225		staszic_ojuz	Dango Maker (JOI18_dango_maker)	C++17	13 / 100	2 ms	504 KiB

dango_maker

#include <iostream>
#include <unordered_map>
#include <cmath>
#include <string>
#include <vector>
#include <algorithm>
#include <locale>
#include <bitset>
#include <climits>

typedef long long ll;

using namespace std;

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    
    ll n, m;
    cin >> n >> m;
    
    vector<vector<bool>> vis(n, vector<bool>(m, false));
    vector<vector<char>> board(n, vector<char>(m, 'A'));
    
    for(int x = 0; x < n; x++){
        for(int y = 0; y < m; y++) {
            cin >> board[x][y];
        }
    }

    ll il = 0;

    for(int x = n - 1; x >= 0; x--){
        for(int y = m - 1; y >= 0; y--) {
            if(!vis[x][y]) {
                if(board[x][y] == 'G') {
                    if(x > 0 && x < n - 1 && !vis[x - 1][y] && !vis[x + 1][y] && board[x - 1][y] == 'R' && board[x + 1][y] == 'W') {
                        //if() {
                        vis[x][y] = true;
                        vis[x - 1][y] = true;
                        vis[x + 1][y] = true;
                        il++;
                        //}
                    } else 
                    if(y > 0 && y < m - 1 && !vis[x][y - 1] && !vis[x][y + 1] && board[x][y - 1] == 'R' && board[x][y + 1] == 'W') {

                        vis[x][y] = true;
                        vis[x][y - 1] = true;
                        vis[x][y + 1] = true;
                        il++;

                    }
                }
            }
        }
    }
    ll mx = il;
    for(int x = n - 1; x >= 0; x--){
        for(int y = m - 1; y >= 0; y--) {
            if(!vis[x][y]) {
                if(board[x][y] == 'G') {
                    if(y > 0 && y < m - 1 && !vis[x][y - 1] && !vis[x][y + 1] && board[x][y - 1] == 'R' && board[x][y + 1] == 'W') {

                        vis[x][y] = true;
                        vis[x][y - 1] = true;
                        vis[x][y + 1] = true;
                        il++;

                    } else 
                    if(x > 0 && x < n - 1 && !vis[x - 1][y] && !vis[x + 1][y] && board[x - 1][y] == 'R' && board[x + 1][y] == 'W') {
                        //if() {
                        vis[x][y] = true;
                        vis[x - 1][y] = true;
                        vis[x + 1][y] = true;
                        il++;
                        //}
                    } 
                    
                }
            }
        }
    }

    cout << max(il, mx) << '\n';

    return 0;
}

• Subtask 1: 13 / 13
• Subtask 2: 0 / 20
• Subtask 3: 0 / 67