CSES - Datatähti 2025 alku - Results
Submission details
Task:Tikut
Sender:vulpesomnia
Submission time:2024-11-10 21:48:03 +0200
Language:C++ (C++11)
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
#40
#50
#60
Test results
testverdicttimegroup
#1ACCEPTED0.00 s1, 3, 4, 5, 6details
#20.00 s1, 4, 5, 6details
#30.00 s1, 4, 5, 6details
#40.00 s1, 4, 5, 6details
#50.01 s2, 5, 6details
#60.01 s2, 5, 6details
#70.88 s3, 5, 6details
#8--3, 5, 6details
#9--3, 5, 6details
#10--3, 5, 6details
#110.90 s3, 5, 6details
#120.01 s4, 5, 6details
#130.01 s4, 5, 6details
#140.01 s4, 5, 6details
#150.01 s4, 5, 6details
#16--5, 6details
#17--5, 6details
#18--5, 6details
#19--5, 6details
#20--6details
#21--6details
#22--6details

Code

#include <bits/stdc++.h>
using namespace std;
int recursiveCutting(vector<int>& a, stack<pair<int, int>> c, int cl ) {
vector<int> ansPossibilities = {};
int ans = 0;
int stick, stickIndex;
//Ei ole viimeinen leikkaus
if (cl != 0) {
//Ensimmäinen leikkaus:
if ((int)c.size() == 0) {
stick = 0, stickIndex = -1;
} else {
pair<int, int> lastCut = c.top();
stick = lastCut.first, stickIndex = lastCut.second;
}
//Loop through sticks
for (int i = stick; i < (int)a.size(); i++) {
//Loop through integer lengths in stick.
// Calculate max non-mirror lengths.
int start = 0, end = 0;
if (i != stick) {
start = 0;
end = a[i]-1;
} else {
int cuts = a[i]-1;
int maxLength = cuts;
if ((cuts-(stickIndex+1)) % 2 == 0) {
maxLength = (cuts-(stickIndex+1))/2;
} else {
maxLength = ceil((cuts-(stickIndex+1))/2.0);
}
start = stickIndex+1, end = stickIndex+maxLength+1;
}
for (int j = start; j < end; j++) {
pair<int, int> temp;
temp.first = i;
temp.second = j;
c.push(temp);
ansPossibilities.push_back(recursiveCutting(a, c, cl-1));
c.pop();
}
}
//Calculate smallest min and max difference.
int min = 0;
for (int i = 0; i < (int)ansPossibilities.size(); i++) {
if (ansPossibilities[i] < min || min == 0) {
min = ansPossibilities[i];
}
}
ans = min;
} else {
//Calculate min and max difference.
//cout << "= = = OPTION = = =" << "\n";
vector<int> cuts = {};
int currentStick = 0;
int max = 0, min = 0;
while (!c.empty()) {
pair<int, int> cut = c.top();
if (cut.first == currentStick) {
cuts.push_back(cut.second);
c.pop();
}
if (cut.first != currentStick || c.size() == 0){
//cout << "Found all of same stick: " << cuts.size() << "\n";
//cout << "Last of same stick: " << cuts[(int)cuts.size()-1] << "\n";
int size = a[currentStick];
//Go through all cuts that have been made on the stick.
for (int i = (int)cuts.size()-1; i >= 0; i--) {
//do the cuts and get min max of sticks, after that do max-min as ans
// If last then check last 2
int temp = cuts[i]+1-(a[currentStick]-size);
//cout << "temp: " << temp << " (cut: " << cuts[i] << ")" << "\n";
if (i == 0) {
int temp2 = size-temp;
if (temp2 > max || max == 0) {
max = temp2;
}
if (temp2 < min || min == 0) {
min = temp2;
}
}
// create before variable for calculating chunk that has been cut off
if (temp > max || max == 0) {
max = temp;
}
if (temp < min || min == 0) {
min = temp;
}
size -= temp;
}
cuts = {};
currentStick++;
}
//cout << "(" << cut.first << ", " << cut.second << ")\n";
}
//cout << "max: " << max << " min: " << min << "\n";
ans = max-min;
//cout << "= = OPTION END = =" << "\n";
}
return ans;
}
vector<int> bruteForce13(int m, vector<int>& a) {
vector<int> answer = {};
for (int k = 1; k <= m; k++) {
//cout << "================== " << "START " << k << " ==================" << "\n";
stack<pair<int, int>> c;
answer.push_back(recursiveCutting(a, c, k));
//cout << "================== " << "END " << k << " ==================" << "\n";
}
return answer;
}
vector<int> bruteForce2(int n, int m, std::map<int, int> a) {
vector<int> vastaus = {};
int min = 0;
int max = 0;
for (const auto &pair : a) {
if (pair.first < min || min == 0) {
min = pair.first;
}
if (pair.first > max || max == 0) {
max = pair.first;
}
}
for (int i = 1; i <= m; i++) { //Mennään läpi kaikki leikkaukset.
a[max] -= 1;
int half = floor(max/2); //tsek if al:wready does floor
//split into equal parts, also do checks after each split? idk
//
if ((float)half != max/2.0) {
a[half] += 1;
a[half+1] += 1;
} else {
a[half] += 2;
}
min = 0;
max = 0;
for (const auto &pair : a) {
if (pair.second != 0) {
if (pair.first < min || min == 0) {
min = pair.first;
}
if (pair.first > max || max == 0) {
max = pair.first;
}
}
}
//for loopin jälkeen push back vastaukseen
vastaus.push_back(max-min);
}
return vastaus;
}
int main() {
int n, m;
vector<int> a;
int maxA = 0;
cin >> n >> m;
for (int i = 0; i < n; i++) {
int temp;
cin >> temp;
if (temp > maxA) {
maxA = temp;
}
a.push_back(temp);
/*if (a[i].second > 0) {
a[i].second += 1;
} else {
a[i].first = temp;
a[i].second = 1;
}*/
}
vector<int> vastaukset = {};
/*if (maxA <= 3) {
vastaukset = bruteForce2(n, m, a);
} else {
vastaukset = bruteForce13(m, a);
}*/
vastaukset = bruteForce13(m, a);
for (int i = 0; i < (int)vastaukset.size(); i++) {
cout << vastaukset[i] << " ";
}
}

Test details

Test 1

Group: 1, 3, 4, 5, 6

Verdict: ACCEPTED

input
1 1
6

correct output

user output

Test 2

Group: 1, 4, 5, 6

Verdict:

input
5 10
4 8 6 2 7

correct output
5 4 2 2 2 1 1 1 1 1 

user output
(empty)

Test 3

Group: 1, 4, 5, 6

Verdict:

input
5 10
5 5 8 6 7

correct output
3 3 2 3 2 2 1 1 1 2 

user output
(empty)

Test 4

Group: 1, 4, 5, 6

Verdict:

input
5 10
8 7 9 6 10

correct output
4 4 3 3 2 2 1 2 2 1 

user output
(empty)

Test 5

Group: 2, 5, 6

Verdict:

input
1000 1071
3 2 3 1 3 3 2 3 2 3 2 2 2 1 2 ...

correct output
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...

user output
(empty)

Test 6

Group: 2, 5, 6

Verdict:

input
1000 1500
3 2 2 3 2 3 2 2 2 3 2 2 3 3 3 ...

correct output
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...

user output
(empty)

Test 7

Group: 3, 5, 6

Verdict:

input
1000 2
15 710 210 347 398 66 318 277 ...

correct output
994 994 

user output
(empty)

Test 8

Group: 3, 5, 6

Verdict:

input
1000 2
743 890 592 942 736 969 616 50...

correct output
498 496 

user output
(empty)

Test 9

Group: 3, 5, 6

Verdict:

input
1000 2
987 968 920 994 988 918 914 95...

correct output
500 500 

user output
(empty)

Test 10

Group: 3, 5, 6

Verdict:

input
1000 2
996 1000 998 998 999 997 997 9...

correct output
500 500 

user output
(empty)

Test 11

Group: 3, 5, 6

Verdict:

input
1000 2
501 501 501 501 501 501 501 50...

correct output
1 168 

user output
(empty)

Test 12

Group: 4, 5, 6

Verdict:

input
100 200
145 136 74 83 73 36 196 115 11...

correct output
194 190 189 183 182 181 181 17...

user output
(empty)

Test 13

Group: 4, 5, 6

Verdict:

input
100 200
157 110 168 155 192 107 146 15...

correct output
95 96 96 95 93 94 94 94 90 91 ...

user output
(empty)

Test 14

Group: 4, 5, 6

Verdict:

input
50 200
137 118 160 118 146 160 140 18...

correct output
98 98 98 96 90 91 88 88 84 86 ...

user output
(empty)

Test 15

Group: 4, 5, 6

Verdict:

input
100 200
147 174 186 148 155 128 158 18...

correct output
99 99 98 98 97 97 96 96 95 95 ...

user output
(empty)

Test 16

Group: 5, 6

Verdict:

input
1000 2000
928772177 816188227 216592201 ...

correct output
991676844 990940224 990685481 ...

user output
(empty)

Test 17

Group: 5, 6

Verdict:

input
1000 2000
665759876 597950008 615453266 ...

correct output
498801198 498681904 498504321 ...

user output
(empty)

Test 18

Group: 5, 6

Verdict:

input
500 2000
683288817 784230412 626685186 ...

correct output
497667621 498434895 495465990 ...

user output
(empty)

Test 19

Group: 5, 6

Verdict:

input
1000 2000
666667000 809309500 571572000 ...

correct output
499499500 499249250 498999000 ...

user output
(empty)

Test 20

Group: 6

Verdict:

input
100000 200000
861772559 734298084 983382252 ...

correct output
499973914 499985299 499985141 ...

user output
(empty)

Test 21

Group: 6

Verdict:

input
30000 200000
691834579 617419813 514778075 ...

correct output
499967533 499976270 499969810 ...

user output
(empty)

Test 22

Group: 6

Verdict:

input
100000 200000
820255000 960780000 741965000 ...

correct output
499995000 499992500 499990000 ...

user output
(empty)