CSES - Putka Open 2020 – 2/5

CSES - Putka Open 2020 – 2/5 - Results

Submission details
Task:	Summat
Sender:	rasastusni
Submission time:	2020-09-27 10:46:30 +0300
Language:	C++ (C++17)
Status:	READY
Result:	12

Feedback
group	verdict	score
#1	ACCEPTED	12
#2	RUNTIME ERROR	0
#3	RUNTIME ERROR	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.01 s	1, 2, 3	details
#2	ACCEPTED	0.01 s	1, 2, 3	details
#3	ACCEPTED	0.01 s	1, 2, 3	details
#4	ACCEPTED	0.01 s	1, 2, 3	details
#5	ACCEPTED	0.01 s	1, 2, 3	details
#6	ACCEPTED	0.01 s	2, 3	details
#7	RUNTIME ERROR	0.01 s	2, 3	details
#8	RUNTIME ERROR	0.01 s	2, 3	details
#9	RUNTIME ERROR	0.01 s	2, 3	details
#10	RUNTIME ERROR	0.01 s	2, 3	details
#11	ACCEPTED	0.04 s	3	details
#12	RUNTIME ERROR	0.04 s	3	details
#13	RUNTIME ERROR	0.04 s	3	details
#14	RUNTIME ERROR	0.04 s	3	details
#15	RUNTIME ERROR	0.04 s	3	details

Code

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

using namespace std;

int n;
int b[5000];
int bss[5000];
int M[5000][100];
int c;
set<int> pivoted;
int seq[100];

void find(int depth) {
	if (depth == n) {
		int asd[100];
		int c = 0;
		for (int i = 0; i < n; ++i) {
			for (int a = i + 1; a < n; ++a) {
				asd[c++] = seq[i] + seq[a];
			}
		}
		sort(asd, asd + c);
		if (equal(asd, asd+c, bss)) {
			for (int i = 0; i < n - 1; ++i) {
				cout << seq[i] << " ";
			}
			cout << seq[n-1] << endl;
			exit(0);
		}
		return;
	}			
	for (int i = 1; i <= 5; ++i) {
		seq[depth] = i;
		find(depth + 1);
	}
}

int find_pivot(int i) {
	for (int a = 0; a < c; ++a) {
		if (M[a][i] != 0 && pivoted.find(a) == pivoted.end()) {
			if (M[a][i] != 1) {
				int bs = M[a][i];
				for (int k = 0; k < n; ++k) {
					int orig = M[a][k];
					M[a][k] /= bs;
					if (M[a][k] * bs != orig) {
						//cout << "O M G" << endl;
					}
				}
					int orig = b[a];
				b[a] /= bs;
					if (b[a] * bs != orig) {
						//cout << "O M G" << endl;
					}
			}
			//cout << i << endl;
			//for (int k = 0; k < n; ++k) {
			//	cout << M[a][k] << " ";
			//}
			//cout << endl;
			pivoted.insert(a);
			return a;
		}
	}
	return -1;
}

void gauss() {
	for (int i = 0; i < n; ++i) {
		//for (int a = 0; a < c; ++a) {
		//for (int k = 0; k < n; ++k) {
		//	cout << M[a][k] << " ";
		//}
		//cout << b[a] << endl;
		//}
		int pivot = find_pivot(i);
		//cout << pivot << endl;
		if (pivot == -1) continue;
		for (int a = 0; a < c; ++a) {
			if (a != pivot && M[a][i] != 0) {
				int bs = M[a][i];
				for (int k = 0; k < n; ++k) {
					M[a][k] -= bs * M[pivot][k];
				}
				b[a] -= bs * b[pivot];
			}
		}
	}
}

int main()
{
	cin >> n;
	for (int i = 0; i < n*(n-1)/2; ++i) {
		cin >> b[i];
		bss[i] = b[i];
	}
	for (int i = 0; i < n; ++i) {
		for (int a = i + 1; a < n; ++a) {
			M[c][i] = 1;
			M[c][a] = 1;
			++c;
		}
	}
	gauss();
	sort(bss, bss + n*(n-1)/2);
	find(0);
	for (auto x : pivoted) {
		cout << b[x];
		if (x != *pivoted.rbegin()) cout << " ";
	}
	cout << endl;
	//for (int i = 0; i < c; ++i) {
	//	for (int k = 0; k < n; ++k) {
	//		cout << M[i][k];
	//	}
	//	cout << endl;
	//	cout << b[i] << endl;
	//}
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
`5 2 2 2 2 2 2 2 2 2 2` view save

correct output
`1 1 1 1 1` view save

user output
`1 1 1 1 1` view save

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
`5 3 4 5 5 6 6 7 7 8 9` view save

correct output
`1 2 3 4 5` view save

user output
`1 2 3 4 5` view save

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
`5 5 6 6 6 9 9 9 10 10 10` view save

correct output
`1 4 5 5 5` view save

user output
`1 4 5 5 5` view save

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
`5 2 3 3 6 6 6 6 7 7 10` view save

correct output
`1 1 2 5 5` view save

user output
`1 1 2 5 5` view save

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

input
`5 4 5 5 5 5 6 6 6 7 7` view save

correct output
`2 2 3 3 4` view save

user output
`2 2 3 3 4` view save

Test 6

Group: 2, 3

Verdict: ACCEPTED

input
`20 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

Test 7

Group: 2, 3

Verdict: RUNTIME ERROR

input
`20 3 4 5 5 6 6 7 7 7 8 8 8 9 9 9 ...` view save

correct output
`1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
(empty)

Error:

*** stack smashing detected ***: <unknown> terminated

Test 8

Group: 2, 3

Verdict: RUNTIME ERROR

input
`20 52 55 55 57 62 62 63 64 66 71 ...` view save

correct output
`1 51 54 54 56 61 61 62 63 65 7...` view save

user output
(empty)

Error:

*** stack smashing detected ***: <unknown> terminated

Test 9

Group: 2, 3

Verdict: RUNTIME ERROR

input
`20 25 30 31 32 36 39 40 41 45 45 ...` view save

correct output
`8 17 22 23 24 28 43 50 53 55 6...` view save

user output
(empty)

Error:

*** stack smashing detected ***: <unknown> terminated

Test 10

Group: 2, 3

Verdict: RUNTIME ERROR

input
`20 9 10 14 17 17 20 21 22 24 25 2...` view save

correct output
`1 8 9 13 16 19 30 32 38 40 43 ...` view save

user output
(empty)

Error:

*** stack smashing detected ***: <unknown> terminated

Test 11

Group: 3

Verdict: ACCEPTED

input
`100 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...` view save

correct output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` view save

user output
`1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ...` Truncated

Test 12

Group: 3

Verdict: RUNTIME ERROR

input
`100 3 4 5 5 6 6 7 7 7 8 8 8 9 9 9 ...` view save

correct output
`1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
(empty)

Error:

*** stack smashing detected ***: <unknown> terminated

Test 13

Group: 3

Verdict: RUNTIME ERROR

input
`100 502824619 505239810 505668108 ...` view save

correct output
`1 502824618 505239809 50566810...` view save

user output
(empty)

Error:

*** stack smashing detected ***: <unknown> terminated

Test 14

Group: 3

Verdict: RUNTIME ERROR

input
`100 17871832 41618648 51611938 538...` view save

correct output
`3939271 13932561 37679377 4989...` view save

user output
(empty)

Error:

*** stack smashing detected ***: <unknown> terminated

Test 15

Group: 3

Verdict: RUNTIME ERROR

input
`100 70588435 115481965 116040218 1...` view save

correct output
`5902586 64685849 109579379 110...` view save

user output
(empty)

Error:

*** stack smashing detected ***: <unknown> terminated

Putka Open 2020 – 2/5

Summat

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

Tasks

Submissions (rasastusni)