CSES - Datatähti Open 2019

Submission details
Task:	Robot
Sender:	pwild
Submission time:	2019-01-20 00:30:24 +0200
Language:	C++
Status:	READY
Result:	100

Feedback
group	verdict	score
#1	ACCEPTED	12
#2	ACCEPTED	32
#3	ACCEPTED	56

Test results
test	verdict	time	group
#1	ACCEPTED	0.02 s	1	details
#2	ACCEPTED	0.01 s	1	details
#3	ACCEPTED	0.02 s	1	details
#4	ACCEPTED	0.01 s	1	details
#5	ACCEPTED	0.02 s	1	details
#6	ACCEPTED	0.02 s	1	details
#7	ACCEPTED	0.01 s	1	details
#8	ACCEPTED	0.01 s	1	details
#9	ACCEPTED	0.02 s	2	details
#10	ACCEPTED	0.01 s	2	details
#11	ACCEPTED	0.03 s	2	details
#12	ACCEPTED	0.01 s	2	details
#13	ACCEPTED	0.02 s	2	details
#14	ACCEPTED	0.02 s	2	details
#15	ACCEPTED	0.01 s	2	details
#16	ACCEPTED	0.01 s	2	details
#17	ACCEPTED	0.01 s	2	details
#18	ACCEPTED	0.03 s	3	details
#19	ACCEPTED	0.02 s	3	details
#20	ACCEPTED	0.02 s	3	details
#21	ACCEPTED	0.01 s	3	details
#22	ACCEPTED	0.02 s	3	details
#23	ACCEPTED	0.01 s	3	details
#24	ACCEPTED	0.02 s	3	details
#25	ACCEPTED	0.01 s	3	details
#26	ACCEPTED	0.03 s	3	details
#27	ACCEPTED	0.02 s	3	details
#28	ACCEPTED	0.01 s	3	details
#29	ACCEPTED	0.02 s	3	details
#30	ACCEPTED	0.01 s	3	details
#31	ACCEPTED	0.02 s	3	details
#32	ACCEPTED	0.02 s	3	details
#33	ACCEPTED	0.02 s	3	details
#34	ACCEPTED	0.01 s	3	details
#35	ACCEPTED	0.02 s	3	details
#36	ACCEPTED	0.02 s	3	details
#37	ACCEPTED	0.02 s	3	details
#38	ACCEPTED	0.01 s	3	details
#39	ACCEPTED	0.01 s	3	details

Code

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef pair<ll,ll> pll;
typedef vector<bool> vb;
const ll oo = 0x3f3f3f3f3f3f3f3f;
const double eps = 1e-9;
#define sz(c) ll((c).size())
#define all(c) begin(c), end(c)
#define FOR(i,a,b) for (ll i = (a); i < (b); i++)
#define FORD(i,a,b) for (ll i = (b)-1; i >= (a); i--)
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define eb emplace_back
#define xx first
#define yy second
#define has(c,i) ((c).find(i) != end(c))
#define TR(X) ({ if(1) cerr << "TR: " << (#X) << " = " << (X) << endl; })

const ll di[] = {0,1,0,-1}, dj[] = {1,0,-1,0};

bool simulate(vvl a) {
	ll m = sz(a), n = sz(a[0]);
	vector<vb> mark(m,vb(n));

	ll i = 0, j = 0, dir = 0, cnt = 0;
	FOR(step,0,1000) {
		if (!mark[i][j]) {
			mark[i][j] = true;
			cnt++;
		}
		if (i == 0 && j == 0 && cnt == m*n) {
			cout << "success!" << endl;
			return true;
		}
		ll &prv = a[i][j];
		i += di[dir], j += dj[dir];
		if (i < 0 || i >= m || j < 0 || j >= n) {
			//cout << "out of bounds" << endl;
			return false;
		}
		if (a[i][j] != prv) dir = (dir+1)%4;
		prv = (prv+1)%3;
	}
	//cout << "no success" << endl;
	return false;
}

vvl construct(ll m, ll n, vl steps) {
	vvl a(m,vl(n,-1));
	
	vl cyc = {0,1,0,1,2,1,2,0,2};

	ll i = 0, j = 0;
	FOR(t,0,sz(steps)) {
		while (steps[t] --> 0) {
			if (a[i][j] == -1) a[i][j] = cyc[t%9];
			i += di[t%4], j += dj[t%4];
		}
	}

	return a;
}

void stuff() {
	vvl a = construct(4,6,{2,2,1,1,3,1,1,2,2,3,5,3});
	simulate(a);
}

vl steps(ll m, ll n) {
	if (m == 2 || n == 2) return {n-1,m-1,n-1,m-1};
	
	if (m < n) {
		vl res = steps(n,m);
		rotate(begin(res),begin(res)+(sz(res)-1),end(res));
		return res;
	}

	vl res = {3};
	FOR(i,0,(n-2)/4) {
		res.back()--;
		for (ll x: vl{m-2,1,m-3,3,m-3,1,m-2,4}) res.pb(x);
	}
	
	if (n%4 == 2) {
		res.back() -= 2;
		res.pb(m-1);
	} else {
		for (ll x: vl{m-4,2,m-5,1,m-3,1,1,2,2}) res.pb(x);
	}
	
	res.pb(n-1), res.pb(m-1);
	
	return res;
}



int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	

	ll m, n; cin >> m >> n;
	
	if (m == 4 && n == 4) {
		cout << "IMPOSSIBLE" << endl;
	} else {
		vvl res = construct(m,n,steps(m,n));
		//simulate(res);
		FOR(i,0,m) {
			FOR(j,0,n) cout << "RGB"[res[i][j]];
			cout << endl;
		}
	}
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
`2 2` view save

correct output
`RG GR` view save

user output
`RG GR` view save

Test 2

Group: 1

Verdict: ACCEPTED

input
`2 4` view save

correct output
`RRRG GRRR` view save

user output
`RRRG GRRR` view save

Test 3

Group: 1

Verdict: ACCEPTED

input
`2 6` view save

correct output
`RRRRRG GRRRRR` view save

user output
`RRRRRG GRRRRR` view save

Test 4

Group: 1

Verdict: ACCEPTED

input
`2 10` view save

correct output
`RRRRRRRRRG GRRRRRRRRR` view save

user output
`RRRRRRRRRG GRRRRRRRRR` view save

Test 5

Group: 1

Verdict: ACCEPTED

input
`2 50` view save

correct output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` view save

user output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` Truncated

Test 6

Group: 1

Verdict: ACCEPTED

input
`2 80` view save

correct output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` view save

user output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` Truncated

Test 7

Group: 1

Verdict: ACCEPTED

input
`2 98` view save

correct output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` view save

user output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` Truncated

Test 8

Group: 1

Verdict: ACCEPTED

input
`2 100` view save

correct output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` view save

user output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` Truncated

Test 9

Group: 2

Verdict: ACCEPTED

input
`2 2` view save

correct output
`RG GR` view save

user output
`RG GR` view save

Test 10

Group: 2

Verdict: ACCEPTED

input
`2 4` view save

correct output
`RRRG GRRR` view save

user output
`RRRG GRRR` view save

Test 11

Group: 2

Verdict: ACCEPTED

input
`2 6` view save

correct output
`RRRRRG GRRRRR` view save

user output
`RRRRRG GRRRRR` view save

Test 12

Group: 2

Verdict: ACCEPTED

input
`4 2` view save

correct output
`RG GG GG GR` view save

user output
`RG GG GG GR` view save

Test 13

Group: 2

Verdict: ACCEPTED

input
`4 4` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 14

Group: 2

Verdict: ACCEPTED

input
`4 6` view save

correct output
`RRRRRG GBGRGG GGRBRG GRRBRR` view save

user output
`RRRRRG RBRBGG RRBGBG RGGGRR` view save

Test 15

Group: 2

Verdict: ACCEPTED

input
`6 2` view save

correct output
`RG GG GG GG GG ...` view save

user output
`RG GG GG GG GG ...` view save

Test 16

Group: 2

Verdict: ACCEPTED

input
`6 4` view save

correct output
`RRRG RGBG RRGG BBGG GRBG ...` view save

user output
`RRRG RBGG RGRR RBGR RRBR ...` view save

Test 17

Group: 2

Verdict: ACCEPTED

input
`6 6` view save

correct output
`RRRRRG GBGRBG GGGBBG GGGBBG GGRBRG ...` view save

user output
`RRGBBR RBGBGR RGGRGR RGGRGR RGRRBR ...` view save

Test 18

Group: 3

Verdict: ACCEPTED

input
`2 2` view save

correct output
`RG GR` view save

user output
`RG GR` view save

Test 19

Group: 3

Verdict: ACCEPTED

input
`2 4` view save

correct output
`RRRG GRRR` view save

user output
`RRRG GRRR` view save

Test 20

Group: 3

Verdict: ACCEPTED

input
`2 6` view save

correct output
`RRRRRG GRRRRR` view save

user output
`RRRRRG GRRRRR` view save

Test 21

Group: 3

Verdict: ACCEPTED

input
`4 2` view save

correct output
`RG GG GG GR` view save

user output
`RG GG GG GR` view save

Test 22

Group: 3

Verdict: ACCEPTED

input
`4 4` view save

correct output
`IMPOSSIBLE` view save

user output
`IMPOSSIBLE` view save

Test 23

Group: 3

Verdict: ACCEPTED

input
`4 6` view save

correct output
`RRRRRG GBGRGG GGRBRG GRRBRR` view save

user output
`RRRRRG RBRBGG RRBGBG RGGGRR` view save

Test 24

Group: 3

Verdict: ACCEPTED

input
`6 2` view save

correct output
`RG GG GG GG GG ...` view save

user output
`RG GG GG GG GG ...` view save

Test 25

Group: 3

Verdict: ACCEPTED

input
`6 4` view save

correct output
`RRRG RGBG RRGG BBGG GRBG ...` view save

user output
`RRRG RBGG RGRR RBGR RRBR ...` view save

Test 26

Group: 3

Verdict: ACCEPTED

input
`6 6` view save

correct output
`RRRRRG GBGRBG GGGBBG GGGBBG GGRBRG ...` view save

user output
`RRGBBR RBGBGR RGGRGR RGGRGR RGRRBR ...` view save

Test 27

Group: 3

Verdict: ACCEPTED

input
`2 100` view save

correct output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` view save

user output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` Truncated

Test 28

Group: 3

Verdict: ACCEPTED

input
`4 20` view save

correct output
`RRRRRRRRRRRRRRRRRRRG GBBBBBBBBBBBBBBBGRGG GGRRRRRRRRRRRRRRRBRG GRRRRRRRRRRRRRRRRBRR` view save

user output
`RRRRRRRRRRRRRRRRRRRG RBRBBBBBBBBBBBBBBBGG RRBGBBBBBBBBBBBBBBBG RGGGRRRRRRRRRRRRRRRR` view save

Test 29

Group: 3

Verdict: ACCEPTED

input
`4 100` view save

correct output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` view save

user output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` Truncated

Test 30

Group: 3

Verdict: ACCEPTED

input
`10 10` view save

correct output
`RRRRRRRRRG GBGRBBGRBG GGGBBGGBBG GGGBBGGBBG GGGBBGGBBG ...` view save

user output
`RRGBBBRRRB GBGBGGRGBB GGGRGRRBBB GGGRGRRBBB GGGRGRRBBB ...` Truncated

Test 31

Group: 3

Verdict: ACCEPTED

input
`12 12` view save

correct output
`RRRRRRRRRRRG RGBBGRBBGRBG RRBGGBBGGBBG RRBGGBBGGBBG RRBGGBBGGBBG ...` view save

user output
`RRGBBBRRRRRB RBGBGGRGBRGB RGGRGRRBBGGB RGGRGRRBBGGB RGGRGRRBBGGB ...` Truncated

Test 32

Group: 3

Verdict: ACCEPTED

input
`10 12` view save

correct output
`RRRRRRRRRRRG RGBBGRBBGRBG RRBGGBBGGBBG RRBGGBBGGBBG RRBGGBBGGBBG ...` view save

user output
`RRRRRRRRRRRG GBBBBBBBBBGG GGRRRRRRRRRR GBBBBBBBBBGR GRBBBBBBBBBR ...` Truncated

Test 33

Group: 3

Verdict: ACCEPTED

input
`12 10` view save

correct output
`RRRRRRRRRG GBGRBBGRBG GGGBBGGBBG GGGBBGGBBG GGGBBGGBBG ...` view save

user output
`RRGBBBRRRB GBGBGGRGBB GGGRGRRBBB GGGRGRRBBB GGGRGRRBBB ...` Truncated

Test 34

Group: 3

Verdict: ACCEPTED

input
`10 90` view save

correct output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` view save

user output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` Truncated

Test 35

Group: 3

Verdict: ACCEPTED

input
`90 10` view save

correct output
`RRRRRRRRRG GBGRBBGRBG GGGBBGGBBG GGGBBGGBBG GGGBBGGBBG ...` view save

user output
`RRGBBBRRRB GBGBGGRGBB GGGRGRRBBB GGGRGRRBBB GGGRGRRBBB ...` Truncated

Test 36

Group: 3

Verdict: ACCEPTED

input
`100 100` view save

correct output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` view save

user output
`RRGBBBRRRRBBBBRGGGBBBBGGGGBRRR...` Truncated

Test 37

Group: 3

Verdict: ACCEPTED

input
`98 100` view save

correct output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` view save

user output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` Truncated

Test 38

Group: 3

Verdict: ACCEPTED

input
`100 98` view save

correct output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` view save

user output
`RRGBBBRRRRBBBBRGGGBBBBGGGGBRRR...` Truncated

Test 39

Group: 3

Verdict: ACCEPTED

input
`98 98` view save

correct output
`RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR...` view save

user output
`RRGBBBRRRRBBBBRGGGBBBBGGGGBRRR...` Truncated

Datatähti Open 2019

Robot

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

Test 17

Test 18

Test 19

Test 20

Test 21

Test 22

Test 23

Test 24

Test 25

Test 26

Test 27

Test 28

Test 29

Test 30

Test 31

Test 32

Test 33

Test 34

Test 35

Test 36

Test 37

Test 38

Test 39

Tasks

Submissions (pwild)