Submission #459594

#	Time	Username	Problem	Language	Result	Execution time	Memory
459594		TeaTime	Dango Maker (JOI18_dango_maker)	C++17	13 / 100	1 ms	332 KiB

dango_maker

//#pragma GCC optimize("O3")
//#pragma GCC target("avx2")
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <map>
#include <set>
#include <queue>
#include <unordered_map>

using namespace std;

#define fastInp cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);

typedef long long ll;
typedef long double ld;

const ll SZ = 3050;

char grid[SZ][SZ];

int main() {
    fastInp;

    ll n, m;
    cin >> n >> m;

    for (int i = 0; i < n; i++) {
        string s;
        cin >> s;
        for (int j = 0; j < m; j++) grid[i][j] = s[j];
    }

    ll ans = 0;

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            if (grid[i][j] == 'W') {
                if (j >= 2 && grid[i][j - 2] == 'R' && grid[i][j - 1] == 'G') {
                    grid[i][j] = '0';
                    grid[i][j - 1] = '0';
                    grid[i][j - 2] = '0';
                    ans++;
                    continue;
                }
                if (i >= 2 && grid[i - 2][j] == 'R' && grid[i - 1][j] == 'G') {
                    grid[i][j] = '0';
                    grid[i - 1][j] = '0';
                    grid[i - 2][j] = '0';
                    ans++;
                    continue;
                }
            }
        }
    }

    cout << ans;

    return 0;
}

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