Submission #233555

#	Time	Username	Problem	Language	Result	Execution time	Memory
233555		thecodingwizard	Dango Maker (JOI18_dango_maker)	C++11	13 / 100	5 ms	384 KiB

dango_maker

#include <bits/stdc++.h>

using namespace std;

#define ll long long
#define ii pair<int, int>
#define pA first
#define pB second
#define F0R(i, a) for (int i = 0; i < (a); i++)
#define FOR(i, a, b) for (int i = (a); i < (b); i++)

int getCt(int i, int j);

int n, m; 
char A[3000][3000];

string match = "RGW";

bool valid(int i, int j, int dx, int dy) {
    int startMult = A[i][j] == 'R' ? 0 : (A[i][j] == 'G' ? 1 : 2);
    int ct = 0;
    FOR(x, i-dx*startMult, i+dx*(2-startMult)+1) {
        FOR(y, j-dy*startMult, j+dy*(2-startMult)+1) {
            if (x<0||x>=n||y<0||y>=m) return false;
            if (A[x][y] != match[ct++]) return false;
        }
    }
    return true;
}

set<int> seen;
int process(int i, int j, int dx, int dy) {
    int startMult = A[i][j] == 'R' ? 0 : (A[i][j] == 'G' ? 1 : 2);
    int ans = 1;
    int ct = 0;
    FOR(x, i-dx*startMult, i+dx*(2-startMult)+1) {
        FOR(y, j-dy*startMult, j+dy*(2-startMult)+1) {
            if (ct==0) {
                int num = x*3000+y+dx*3000*3000*1+dy*3000*3000*2;
                if (seen.count(num)) return 0;
                seen.insert(num);
                ct++;
            }
            ans += getCt(x, y);
        }
    }
    return ans;
}

int getCt(int i, int j) {
    int ct = 0;

    if (valid(i, j, 0, 1)) {
        ct += process(i, j, 0, 1);
    }
    if (valid(i, j, 1, 0)) {
        ct += process(i, j, 1, 0);
    }

    return ct;
}

int main() {
    cin >> n >> m;
    F0R(i, n) {
        F0R(j, m) {
            cin >> A[i][j];
        }
    }
    int ans = 0;

    F0R(i, n) {
        F0R(j, m) {
            ans += (getCt(i, j)+1)/2;
        }
    }

    cout << ans << endl;

    return 0;
}

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