Submission #627152

#	Time	Username	Problem	Language	Result	Execution time	Memory
627152		boris_mihov	Dango Maker (JOI18_dango_maker)	C++17	13 / 100	1 ms	340 KiB

dango_maker

#include <algorithm>
#include <iostream>
#include <numeric>
#include <cassert>
#include <vector>
#include <cmath>

typedef long long llong;
const int MAXN = 3000 + 10;
const int INF  = 1e9;

int n, m;
char s[MAXN][MAXN];
bool used[MAXN][MAXN];

inline bool tryHorizontal(int stX, int stY)
{
    if (stY + 2 >= m+1) return false;
    return !used[stX][stY] && !used[stX][stY + 1] && !used[stX][stY + 2] && s[stX][stY] == 'R' && s[stX][stY + 1] == 'G' && s[stX][stY + 2] == 'W';
}

inline bool tryVertical(int stX, int stY)
{
    if (stX + 2 >= n+1) return false;
    return !used[stX][stY] && !used[stX + 1][stY] && !used[stX + 2][stY] && s[stX][stY] == 'R' && s[stX + 1][stY] == 'G' && s[stX + 2][stY] == 'W';
}

void solve()
{
    int ans = 0;
    for (int row = 1 ; row <= n ; ++row)
    {
        for (int col = 1 ; col <= m ; ++col)
        {
            if (tryHorizontal(row, col))
            {
                used[row][col] = true;
                used[row][col + 1] = true;
                used[row][col + 2] = true;
                ans++;
            }
        }

        for (int col = 1 ; col <= m ; ++col)
        {
            if (tryVertical(row, col))
            {
                used[row][col] = true;
                used[row + 1][col] = true;
                used[row + 2][col] = true;
                ans++;
            }
        }
    }

    std::cout << ans << '\n';
}

void read()
{
    std::cin >> n >> m;
    for (int i = 1 ; i <= n ; ++i)
    {
        std::cin >> s[i]+1;
    }
}

void fastIO()
{
    std::ios_base :: sync_with_stdio(0);
    std::cout.tie(nullptr);
    std::cin.tie(nullptr);
}

int main()
{
    fastIO();
    read();
    solve();

    return 0;
}

Compilation message (stderr)

dango_maker.cpp: In function 'void read()':
dango_maker.cpp:64:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   64 |         std::cin >> s[i]+1;
      |                     ~~~~^~

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