CSES - Putka Open 2020 – 4/5

Submission details
Task:	Ruudukko
Sender:	Mahtimursu
Submission time:	2023-03-21 00:46:49 +0200
Language:	C++ (C++17)
Status:	READY
Result:	0

Feedback
group	verdict	score
#1	WRONG ANSWER	0
#2	WRONG ANSWER	0
#3	WRONG ANSWER	0
#4	WRONG ANSWER	0
#5	WRONG ANSWER	0

Test results
test	verdict	group
#1	WRONG ANSWER	1, 5	details
#2	WRONG ANSWER	2, 5	details
#3	WRONG ANSWER	3, 5	details
#4	WRONG ANSWER	4, 5	details
#5	WRONG ANSWER	5	details
#6	WRONG ANSWER	5	details
#7	WRONG ANSWER	2, 5	details
#8	WRONG ANSWER	2, 5	details
#9	WRONG ANSWER	3, 5	details
#10	WRONG ANSWER	3, 5	details
#11	WRONG ANSWER	3, 5	details
#12	WRONG ANSWER	3, 5	details
#13	WRONG ANSWER	4, 5	details
#14	WRONG ANSWER	5	details
#15	WRONG ANSWER	3, 5	details
#16	WRONG ANSWER	5	details

Code

#include <bits/stdc++.h>

typedef long long ll;

#define M 1000000007
#define N (1 << 18)

#define y first
#define x second

using namespace std;

bool check_small(int h, int w, int y0, int x0, int y1, int x1) {
	if (x0 > x1 || (x0 == x1 && y0 > y1)) return check_small(h, w, y1, x1, y0, x0);
 
	if (h == 1) {
		if (x0 == 0 && x1 == w-1) return true;
		if (x0 == w-1 && x1 == 0) return true;
		return false;
	} else {
		if (x0 == x1 && 0 < x0 && x0 < w-1) return false;
		return true;
	}
}

bool works(int h, int w, int y0, int x0, int y1, int x1) {
	if (y0 == y1 && x0 == x1) return false;
	if (w < h) return works(w, h, x0, y0, x1, y1);
	if (! ((h*w ^ abs(x0 - x1) ^ abs(y0 - y1)) & 1)) return false;
	if ((h*w & 1) && ((x0 + y0) & 1)) return false;
 
	if (h <= 2) return check_small(h, w, y0, x0, y1, x1);
	if (h == 3 && (!(w & 1))) {
		if (y0 == 1) {
			if ((x0 & 1) && x1 < x0) return false;
			if (!(x0 & 1) && x1 > x0) return false;
		} else {
			if (!(x0 & 1) && (x1 < x0 - 1)) return false;
			if ((x0 & 1) && (x1 > x0 + 1)) return false;
		}
	}   
	return true;
}

bool ok(int h, int w, pair<int, int> s, pair<int, int> t) {
    return works(h, w, s.y - 1, s.x - 1, t.y - 1, t.x - 1);
}

string rev(string s) {
    map<char, char> sw;
    sw['U'] = 'D';
    sw['D'] = 'U';
    sw['L'] = 'R';
    sw['R'] = 'L';

    string ans;
    for (char c : s) ans += sw[c];
    reverse(ans.begin(), ans.end());
    return ans;
}

pair<int, int> offset(pair<int, int> p, pair<int, int> off) {
    return {p.y + off.y, p.x + off.x};
}

// Assume s.y <= 2 and t.y >= n - 2
string solve(int n, int m, pair<int, int> s, pair<int, int> t) {
    if (s.y > 2) return solve(n - 2, m, offset(s, {-2, 0}), offset(t, {-2, 0}));
    if (t.y < n - 2) return solve(n - 2, m, s, t);
    if (n <= 3) {
        // Solve for m
        return "";
    }
    //if (n == 4 && m <= 5) return "";
    //cout << n << " " << m << endl;

    int left_n = 2;
    int right_n = 2 + (n % 2);

    // Find a ok for this setup ignoring in between stuff

    int mid = n - left_n - right_n;

    for (int j1 = 1; j1 <= m; ++j1) {
        for (int j2 = 1; j2 <= m; ++j2) {
            pair<int, int> first_e = {left_n, j1};
            pair<int, int> second_e = {1, j2};

            if (ok(left_n, m, s, first_e) 
                && ok(right_n, m, second_e, offset(t, {-(left_n + mid), 0}))
                && (mid == 0 || ok(mid, m, {1, j1}, {mid, j2}))) {
                return "";
            }
        }
    }

    exit(-1);
}

void test_case() {
    int n, m;
    pair<int, int> s, t;

    cin >> n >> m >> s.y >> s.x >> t.y >> t.x;

    if (!ok(n, m, s, t)) {
        cout << "NO" << endl;
        return;
    }

    cout << "YES" << endl;
    cout << n << " " << m << " " << s.y << " " << s.x << " " << t.y << " " << t.x << endl;
    string ans = s <= t ? solve(n, m, s, t) : rev(solve(n, m, t, s));
    cout << ans << "DONE\n";
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1;
    cin >> t;
    for (int i = 0; i < t; ++i) {
        test_case();
    }

    return 0;
}

/*


*/

Test details

Test 1

Group: 1, 5

Verdict: WRONG ANSWER

input
`100 1 45 1 45 1 1 1 18 1 1 1 10 1 47 1 17 1 30 1 33 1 28 1 20 ...` view save

correct output
`YES LLLLLLLLLLLLLLLLLLLLLLLLLLLLLL...` view save

user output
`YES 1 45 1 45 1 1 DONE NO NO ...` Truncated

Test 2

Group: 2, 5

Verdict: WRONG ANSWER

input
`100 2 43 1 33 1 21 2 2 1 1 2 2 2 32 1 1 2 8 2 14 1 12 1 14 ...` view save

correct output
`NO NO NO NO YES ...` view save

user output
`NO NO NO NO YES ...` Truncated

Test 3

Group: 3, 5

Verdict: WRONG ANSWER

input
`100 3 4 2 1 2 4 3 38 2 24 1 22 3 29 2 23 2 3 3 8 3 1 1 2 ...` view save

correct output
`NO NO NO YES RRRRRRRUULDLULDLULDLLUR ...` view save

user output
`NO NO NO YES 3 8 3 1 1 2 ...` Truncated

Test 4

Group: 4, 5

Verdict: WRONG ANSWER

input
`100 4 25 2 19 1 5 4 13 3 10 4 12 4 7 3 1 4 2 4 23 1 19 2 5 ...` view save

correct output
`YES DDRRRRRRULLLLLURRRRRULLLLLLLDD...` view save

user output
`YES 4 25 2 19 1 5 DONE YES 4 13 3 10 4 12 ...` Truncated

Test 5

Group: 5

Verdict: WRONG ANSWER

input
`100 16 8 13 1 14 8 41 21 19 11 32 12 46 17 13 7 6 11 8 41 4 32 4 12 ...` view save

correct output
`NO YES LURULURULURULURULURRDDDDDDDDDR...` view save

user output
`NO YES 41 21 19 11 32 12 DONE YES ...` Truncated

Test 6

Group: 5

Verdict: WRONG ANSWER

input
`100 31 38 18 35 31 37 35 48 7 13 21 21 46 21 25 2 4 19 35 2 13 2 35 1 ...` view save

correct output
`YES LLLLLLLLLLLLDRRRRRRRRRRRRDLLLL...` view save

user output
`YES 31 38 18 35 31 37 DONE NO NO ...` Truncated

Test 7

Group: 2, 5

Verdict: WRONG ANSWER

input
`100 2 4 1 3 1 4 2 4 2 2 1 1 2 4 2 3 1 2 2 4 2 3 1 4 ...` view save

correct output
`YES LLDRRRU NO NO NO ...` view save

user output
`YES 2 4 1 3 1 4 DONE NO NO ...` Truncated

Test 8

Group: 2, 5

Verdict: WRONG ANSWER

input
`100 2 5 1 2 2 4 2 5 1 2 1 1 2 5 2 1 1 2 2 5 1 1 1 5 ...` view save

correct output
`YES LDRRURRDL YES RRRDLLLLU NO ...` view save

user output
`YES 2 5 1 2 2 4 DONE YES 2 5 1 2 1 1 ...` Truncated

Test 9

Group: 3, 5

Verdict: WRONG ANSWER

input
`100 3 4 1 1 2 3 3 4 2 4 3 2 3 4 2 1 3 1 3 4 1 4 3 4 ...` view save

correct output
`YES DDRRRUULLDR NO YES URRRDDLULDL ...` view save

user output
`YES 3 4 1 1 2 3 DONE NO YES ...` Truncated

Test 10

Group: 3, 5

Verdict: WRONG ANSWER

input
`100 3 5 3 4 3 2 3 5 3 5 2 3 3 5 3 1 2 2 3 5 3 1 3 2 ...` view save

correct output
`NO NO YES UURRRRDDLULDLU NO ...` view save

user output
`NO NO YES 3 5 3 1 2 2 DONE ...` Truncated

Test 11

Group: 3, 5

Verdict: WRONG ANSWER

input
`100 3 8 2 8 1 2 3 8 2 4 1 7 3 8 3 4 2 7 3 8 2 5 3 1 ...` view save

correct output
`NO NO NO YES LLLDRRRRURDRUULLLLLLLDD ...` view save

user output
`NO NO NO YES 3 8 2 5 3 1 ...` Truncated

Test 12

Group: 3, 5

Verdict: WRONG ANSWER

input
`100 3 9 1 3 2 9 3 9 1 6 1 5 3 9 3 6 2 8 3 9 3 2 3 4 ...` view save

correct output
`NO NO NO NO NO ...` view save

user output
`NO NO NO NO NO ...` Truncated

Test 13

Group: 4, 5

Verdict: WRONG ANSWER

input
`100 4 4 2 2 1 4 4 4 4 1 2 2 4 4 2 1 4 3 4 4 3 1 3 3 ...` view save

correct output
`YES DDLUUURRDDDRUUU YES UUURRRDLDRDLLUU NO ...` view save

user output
`YES 4 4 2 2 1 4 DONE YES 4 4 4 1 2 2 ...` Truncated

Test 14

Group: 5

Verdict: WRONG ANSWER

input
`100 12 27 6 22 1 8 6 25 3 2 4 4 6 16 4 6 5 2 36 33 8 6 1 6 ...` view save

correct output
`YES DLDDDDDRUUUURDDDDRUURDDRRULURU...` view save

user output
`YES 12 27 6 22 1 8 DONE YES 6 25 3 2 4 4 ...` Truncated

Test 15

Group: 3, 5

Verdict: WRONG ANSWER

input
`100 3 12 3 5 1 4 3 20 3 19 2 19 3 34 3 9 2 9 3 38 2 15 3 15 ...` view save

correct output
`YES RRRRRRRUULDLULDLULDLULDLDLULDL...` view save

user output
`YES 3 12 3 5 1 4 DONE YES 3 20 3 19 2 19 ...` Truncated

Test 16

Group: 5

Verdict: WRONG ANSWER

input
`100 50 50 29 1 16 21 50 50 37 5 23 48 50 50 32 22 45 24 50 50 6 28 12 37 ...` view save

correct output
`YES DDDDDDDDDDDDDDDDDDDDDRUUUUUUUU...` view save

user output
`YES 50 50 29 1 16 21 DONE YES 50 50 37 5 23 48 ...` Truncated

Putka Open 2020 – 4/5

Ruudukko

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Test 15

Test 16

Tasks

Submissions (Mahtimursu)