Submission #503223

#	Time	Username	Problem	Language	Result	Execution time	Memory
503223		Kirill_Maglysh	Dango Maker (JOI18_dango_maker)	C++17	33 / 100	307 ms	262148 KiB

dango_maker

#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <algorithm>

#define printLn(n) cout << n << '\n'

using namespace std;

typedef int ll;

const ll EMPTY = 0;
const ll HORIZONTAL = 1;
const ll VERTICAL = 2;

ll readLL();

string readStr();

void resolve();

bool check(const vector<vector<char>> &field, ll i, ll j, ll dir);

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    resolve();

    return 0;
}

void resolve() {
    ll height = readLL();
    ll width = readLL();
    vector<vector<char>> field(height + 2, vector<char>(width + 2, '#'));
    for (ll i = 1; i <= height; ++i) {
        string str = readStr();
        for (ll j = 1; j <= width; ++j) {
            field[i][j] = str[j-1];
        }
    }

    vector<vector<vector<ll>>> dp(height + 2, vector<vector<ll>>(width + 2, vector<ll>(3, 0)));
    ll res = 0;
    for (ll i = 1; i <= height; ++i) {
        for (ll j = 1; j <= width; ++j) {
            ll prevHor = dp[i - 1][j + 1][HORIZONTAL];
            ll prevVer = dp[i - 1][j + 1][VERTICAL];
            ll prevEmp = dp[i - 1][j + 1][EMPTY];

            dp[i][j][EMPTY] = max(prevEmp, max(prevHor, prevVer));

            if (check(field, i, j, VERTICAL)) {
                dp[i][j][VERTICAL] = 1 + max(prevVer, prevEmp);
            }

            if (check(field, i, j, HORIZONTAL)) {
                dp[i][j][HORIZONTAL] = 1 + max(prevHor, prevEmp);
            }

            if (i == height || j == 1) {
                res += max(dp[i][j][EMPTY], max(dp[i][j][HORIZONTAL], dp[i][j][VERTICAL]));
            }
        }
    }

//    for (int i = 1; i <= height; ++i) {
//        for (int j = 1; j <= width; ++j) {
//            cout << "{" << dp[i][j][0] << dp[i][j][1] << dp[i][j][2] << "}" << " ";
//        }
//
//        printLn("");
//    }

    printLn(res);
}

bool check(const vector<vector<char>> &field, ll i, ll j, ll dir) {
    if (dir == HORIZONTAL) {
        return (field[i][j - 1] == 'R' && field[i][j] == 'G' && field[i][j + 1] == 'W');
    } else if (dir == VERTICAL) {
        return (field[i - 1][j] == 'R' && field[i][j] == 'G' && field[i + 1][j] == 'W');
    }

    return false;
}

ll readLL() {
    ll num;
    cin >> num;
    return num;
}

string readStr() {
    string num;
    cin >> num;
    return num;
}

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