CSES - Datatähti 2019 loppu - Results
Submission details
Task:Summa
Sender:Alexander Popov
Submission time:2019-01-17 15:53:20
Language:C++
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED100
Test results
testverdicttime
#1ACCEPTED0.02 sdetails
#2ACCEPTED0.01 sdetails
#3ACCEPTED0.02 sdetails
#4ACCEPTED0.02 sdetails
#5ACCEPTED0.03 sdetails
#6ACCEPTED0.03 sdetails
#7ACCEPTED0.02 sdetails
#8ACCEPTED0.02 sdetails
#9ACCEPTED0.01 sdetails
#10ACCEPTED0.03 sdetails
#11ACCEPTED0.03 sdetails
#12ACCEPTED0.02 sdetails
#13ACCEPTED0.01 sdetails
#14ACCEPTED0.02 sdetails
#15ACCEPTED0.01 sdetails
#16ACCEPTED0.01 sdetails
#17ACCEPTED0.01 sdetails
#18ACCEPTED0.02 sdetails
#19ACCEPTED0.02 sdetails
#20ACCEPTED0.02 sdetails
#21ACCEPTED0.02 sdetails
#22ACCEPTED0.01 sdetails
#23ACCEPTED0.02 sdetails
#24ACCEPTED0.03 sdetails
#25ACCEPTED0.02 sdetails
#26ACCEPTED0.02 sdetails
#27ACCEPTED0.02 sdetails
#28ACCEPTED0.01 sdetails

Code

#include <cstdint>
#include <bits/stdc++.h> // wtf

/*

for first in range(1, 1001):
	for second in range(1, 1001-first-1):
		for third in range(1, 1001-first-second):
			if not set([first, second, third]) in doneSets:
				print repr([first, second, third]), first+second+third, first, second, third
				while True:
					pass
n = 1000 + 1

for n in range(3, 1001):
	counter = 0
	doneSets = []
	for first in range(1, n):
		if first == second:
			continue
		for second in range(1, n-first-1):
			for third in range(1, n-first-second):
				if second == third or first == third:
					continue
				kek = set([first, second, third])
				if not kek in doneSets:
					doneSets.append(kek)
					if sum(kek) == (n-1):
						counter += 1
	print n-1, counter

n = 1000
for first in range(1, n-1):

k = 0
d = 2
i = 8

damn = [0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 5, 7, 8]

for x in range(14, 1001):
	if k < 4:
		i += d
		k += 1
	elif k == 4:
		i += d + 1
		k += 1
	elif k == 5:
		i += d
		k = 0
		d += 1
	print x, i
	damn.append(i)


*/

std::vector<uint64_t> values = {0, 0, 0, 0, 0, 0, 1, 1, 2, 3, 4, 5, 7, 8};

int main() {
	uint64_t n;
	std::cin >> n;

	if (n < 14) {
		std::cout << values[n] << std::endl;
		return 0;
	}

	uint64_t k = 0;
	uint64_t d = 2;
	uint64_t i = 8;

	uint64_t result = 0;
	for (uint64_t x = 14; x <= n; ++x) {
		if (k < 4) { i += d; k += 1; }
		else if (k == 4) { i += d + 1; k += 1; }
		else if (k == 5) { i += d; k = 0; d += 1; }
		result = i;
	}

	std::cout << result << std::endl;

	return 0;
}

Test details

Test 1

Verdict: ACCEPTED

input
1

correct output
0

user output
0

Test 2

Verdict: ACCEPTED

input
2

correct output
0

user output
0

Test 3

Verdict: ACCEPTED

input
3

correct output
0

user output
0

Test 4

Verdict: ACCEPTED

input
4

correct output
0

user output
0

Test 5

Verdict: ACCEPTED

input
5

correct output
0

user output
0

Test 6

Verdict: ACCEPTED

input
6

correct output
1

user output
1

Test 7

Verdict: ACCEPTED

input
7

correct output
1

user output
1

Test 8

Verdict: ACCEPTED

input
8

correct output
2

user output
2

Test 9

Verdict: ACCEPTED

input
9

correct output
3

user output
3

Test 10

Verdict: ACCEPTED

input
10

correct output
4

user output
4

Test 11

Verdict: ACCEPTED

input
20

correct output
24

user output
24

Test 12

Verdict: ACCEPTED

input
30

correct output
61

user output
61

Test 13

Verdict: ACCEPTED

input
40

correct output
114

user output
114

Test 14

Verdict: ACCEPTED

input
50

correct output
184

user output
184

Test 15

Verdict: ACCEPTED

input
60

correct output
271

user output
271

Test 16

Verdict: ACCEPTED

input
70

correct output
374

user output
374

Test 17

Verdict: ACCEPTED

input
80

correct output
494

user output
494

Test 18

Verdict: ACCEPTED

input
90

correct output
631

user output
631

Test 19

Verdict: ACCEPTED

input
100

correct output
784

user output
784

Test 20

Verdict: ACCEPTED

input
200

correct output
3234

user output
3234

Test 21

Verdict: ACCEPTED

input
300

correct output
7351

user output
7351

Test 22

Verdict: ACCEPTED

input
400

correct output
13134

user output
13134

Test 23

Verdict: ACCEPTED

input
500

correct output
20584

user output
20584

Test 24

Verdict: ACCEPTED

input
600

correct output
29701

user output
29701

Test 25

Verdict: ACCEPTED

input
700

correct output
40484

user output
40484

Test 26

Verdict: ACCEPTED

input
800

correct output
52934

user output
52934

Test 27

Verdict: ACCEPTED

input
900

correct output
67051

user output
67051

Test 28

Verdict: ACCEPTED

input
1000

correct output
82834

user output
82834