CSES - Datatähti 2025 alku

CSES - Datatähti 2025 alku - Results

Submission details
Task:	Tikut
Sender:	Pikaksi
Submission time:	2024-11-10 13:50:39 +0200
Language:	C++ (C++11)
Status:	READY
Result:	27

Feedback
group	verdict	score
#1	ACCEPTED	7
#2	ACCEPTED	8
#3	ACCEPTED	12
#4	WRONG ANSWER	0
#5	WRONG ANSWER	0
#6	WRONG ANSWER	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.00 s	1, 3, 4, 5, 6	details
#2	ACCEPTED	0.00 s	1, 4, 5, 6	details
#3	ACCEPTED	0.00 s	1, 4, 5, 6	details
#4	ACCEPTED	0.00 s	1, 4, 5, 6	details
#5	ACCEPTED	0.00 s	2, 5, 6	details
#6	ACCEPTED	0.01 s	2, 5, 6	details
#7	ACCEPTED	0.00 s	3, 5, 6	details
#8	ACCEPTED	0.00 s	3, 5, 6	details
#9	ACCEPTED	0.00 s	3, 5, 6	details
#10	ACCEPTED	0.00 s	3, 5, 6	details
#11	ACCEPTED	0.00 s	3, 5, 6	details
#12	ACCEPTED	0.01 s	4, 5, 6	details
#13	WRONG ANSWER	0.00 s	4, 5, 6	details
#14	WRONG ANSWER	0.00 s	4, 5, 6	details
#15	WRONG ANSWER	0.00 s	4, 5, 6	details
#16	ACCEPTED	0.01 s	5, 6	details
#17	WRONG ANSWER	0.01 s	5, 6	details
#18	WRONG ANSWER	0.00 s	5, 6	details
#19	WRONG ANSWER	0.01 s	5, 6	details
#20	WRONG ANSWER	0.17 s	6	details
#21	WRONG ANSWER	0.10 s	6	details
#22	WRONG ANSWER	0.17 s	6	details

Code

#include <bits/stdc++.h>
 
using namespace std;
typedef long long ll;
 
struct Frac
{
    int number;
    int divisor;
    double result;
 
    void update()
    {
        result = (double)number / (double)divisor;
    }
 
    Frac(int _number, int _divisor)
    {
        number = _number;
        divisor = _divisor;
        update();
    }
 
    bool operator<(Frac frac) const
    {
        return result < frac.result;
    }
};
 
multiset<Frac> numbersSorted;
 
void printSet()
{
    cout << "printing set:\n";
    for (Frac frac : numbersSorted) {
        cout << frac.number << " " << frac.divisor << " " << frac.result << "\n";
    }
}
 
void printDifference()
{
    Frac fracSmall = *numbersSorted.begin();
    int smallestNumber = fracSmall.number / fracSmall.divisor;
 
    Frac fracBig = *numbersSorted.rbegin();
    int biggestNumber = fracBig.number / fracBig.divisor;
    if (fracBig.number % fracBig.divisor != 0) {
        biggestNumber += 1;
    }
    cout << (biggestNumber - smallestNumber);
}
 
int getMax(int number, int div)
{
    int ans = number / div;
    if (number % div != 0) {
        ans += 1;
    }
    return ans;
}
 
int getMin(int number, int div)
{
    int ans = number / div;
    return ans;
}
 
void bruteForce(vector<int> sticks, int m, int& ans1, int& ans2)
{
    if (sticks.size() == 1) {
        if (m >= 1) {
            int difference = getMax(sticks[0], 2) - getMin(sticks[0], 2);
            ans1 = difference;
        }
        if (m == 2) {
            int difference = getMax(sticks[0], 3) - getMin(sticks[0], 3);
            ans2 = difference;
        }
        return;
    }
    sort(sticks.begin(), sticks.end(), std::greater<int>());
 
    if (m >= 1) {
        int difference = max(getMax(sticks[0], 2), sticks[1]) - min(getMin(sticks[0], 2), sticks.back());
        ans1 = difference;
    }
    if (m == 2) {
        int maxLenDiv2 = max(getMax(sticks[0], 2), getMax(sticks[1], 2));
        if (sticks.size() >= 3) {
            maxLenDiv2 = max(maxLenDiv2, sticks[2]);
        }
        int minLenDiv2 = min(getMin(sticks[0], 2), getMin(sticks[1], 2));
        if (sticks.size() >= 3) {
            minLenDiv2 = min(minLenDiv2, sticks.back());
        }
        int div2Difference = maxLenDiv2 - minLenDiv2;
        
        int maxLenDiv3 = max(getMax(sticks[0], 3), sticks[1]);
        int minLenDiv3 = min(getMin(sticks[0], 3), sticks.back());
        int div3Difference = maxLenDiv3 - minLenDiv3;
        int ans = min(div2Difference, div3Difference);
        ans2 = ans;
    }
}
 
void runBruteForce(int n, int m)
{
    vector<int> sticks;
    
    for (int i = 0; i < n; i++) {
        int number;
        cin >> number;
        sticks.push_back(number);
    }
    int ans1, ans2;
    bruteForce(sticks, m, ans1, ans2);
    cout << ans1;
    if (m == 2) {
        cout << " " << ans2;
    }
}
 
int main()
{
    int n, m;
    cin >> n >> m;
    if (m <= 2) {
        runBruteForce(n, m);
        return 0;
    }
    //n = 3; m = 4; vector<int> testNumbers = {3, 4, 5};
    //n = 2; m = 6; vector<int> testNumbers = {2, 6};
 
    for (int i = 0; i < n; i++) {
        int number;
        cin >> number;
        //number = testNumbers[i];
        numbersSorted.emplace(number, 1);
    }
 
    for (int k = 0; k < m; k++) {
        //printSet();
 
        Frac frac = *numbersSorted.rbegin();
        Frac newFrac = Frac(frac.number, frac.divisor + 1);
        
        numbersSorted.erase(--numbersSorted.end());
        //cout << "size = " << numbersSorted.size() << "\n";
        numbersSorted.insert(newFrac);
        //cout << "size = " << numbersSorted.size() << "\n";
 
        printDifference();
        //cout << "\n";
        if (k != m - 1) {
            cout << " ";
        }
    }
    //printSet();
}

Test details

Test 1

Group: 1, 3, 4, 5, 6

Verdict: ACCEPTED

input
`1 1 6` view save

correct output
`0` view save

user output
`0` view save

Test 2

Group: 1, 4, 5, 6

Verdict: ACCEPTED

input
`5 10 4 8 6 2 7` view save

correct output
`5 4 2 2 2 1 1 1 1 1` view save

user output
`5 4 2 2 2 1 1 1 1 1` view save

Test 3

Group: 1, 4, 5, 6

Verdict: ACCEPTED

input
`5 10 5 5 8 6 7` view save

correct output
`3 3 2 3 2 2 1 1 1 2` view save

user output
`3 3 2 3 2 2 1 1 1 2` view save

Test 4

Group: 1, 4, 5, 6

Verdict: ACCEPTED

input
`5 10 8 7 9 6 10` view save

correct output
`4 4 3 3 2 2 1 2 2 1` view save

user output
`4 4 3 3 2 2 1 2 2 1` view save

Test 5

Group: 2, 5, 6

Verdict: ACCEPTED

input
`1000 1071 3 2 3 1 3 3 2 3 2 3 2 2 2 1 2 ...` view save

correct output
`2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...` view save

user output
`2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...` view save

Test 6

Group: 2, 5, 6

Verdict: ACCEPTED

input
`1000 1500 3 2 2 3 2 3 2 2 2 3 2 2 3 3 3 ...` view save

correct output
`2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...` view save

user output
`2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 ...` view save

Test 7

Group: 3, 5, 6

Verdict: ACCEPTED

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

correct output
`994 994` view save

user output
`994 994` view save

Test 8

Group: 3, 5, 6

Verdict: ACCEPTED

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

correct output
`498 496` view save

user output
`498 496` view save

Test 9

Group: 3, 5, 6

Verdict: ACCEPTED

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

correct output
`500 500` view save

user output
`500 500` view save

Test 10

Group: 3, 5, 6

Verdict: ACCEPTED

input
`1000 2 996 1000 998 998 999 997 997 9...` view save

correct output
`500 500` view save

user output
`500 500` view save

Test 11

Group: 3, 5, 6

Verdict: ACCEPTED

input
`1000 2 501 501 501 501 501 501 501 50...` view save

correct output
`1 168` view save

user output
`1 168` view save

Test 12

Group: 4, 5, 6

Verdict: ACCEPTED

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

correct output
`194 190 189 183 182 181 181 17...` view save

user output
`194 190 189 183 182 181 181 17...` view save

Test 13

Group: 4, 5, 6

Verdict: WRONG ANSWER

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

correct output
`95 96 96 95 93 94 94 94 90 91 ...` view save

user output
`95 96 96 95 93 94 94 94 90 91 ...` view save

Test 14

Group: 4, 5, 6

Verdict: WRONG ANSWER

input
`50 200 137 118 160 118 146 160 140 18...` view save

correct output
`98 98 98 96 90 91 88 88 84 86 ...` view save

user output
`98 98 98 96 90 91 88 88 84 86 ...` view save

Test 15

Group: 4, 5, 6

Verdict: WRONG ANSWER

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

correct output
`99 99 98 98 97 97 96 96 95 95 ...` view save

user output
`99 99 98 98 97 97 96 96 95 95 ...` view save

Test 16

Group: 5, 6

Verdict: ACCEPTED

input
`1000 2000 928772177 816188227 216592201 ...` view save

correct output
`991676844 990940224 990685481 ...` view save

user output
`991676844 990940224 990685481 ...` view save

Test 17

Group: 5, 6

Verdict: WRONG ANSWER

input
`1000 2000 665759876 597950008 615453266 ...` view save

correct output
`498801198 498681904 498504321 ...` view save

user output
`498801198 498681904 498504321 ...` view save

Test 18

Group: 5, 6

Verdict: WRONG ANSWER

input
`500 2000 683288817 784230412 626685186 ...` view save

correct output
`497667621 498434895 495465990 ...` view save

user output
`497667621 498434895 495465990 ...` view save

Test 19

Group: 5, 6

Verdict: WRONG ANSWER

input
`1000 2000 666667000 809309500 571572000 ...` view save

correct output
`499499500 499249250 498999000 ...` view save

user output
`499499500 499249250 498999000 ...` view save

Test 20

Group: 6

Verdict: WRONG ANSWER

input
`100000 200000 861772559 734298084 983382252 ...` view save

correct output
`499973914 499985299 499985141 ...` view save

user output
`499973914 499985299 499985141 ...` view save

Test 21

Group: 6

Verdict: WRONG ANSWER

input
`30000 200000 691834579 617419813 514778075 ...` view save

correct output
`499967533 499976270 499969810 ...` view save

user output
`499967533 499976270 499969810 ...` view save

Test 22

Group: 6

Verdict: WRONG ANSWER

input
`100000 200000 820255000 960780000 741965000 ...` view save

correct output
`499995000 499992500 499990000 ...` view save

user output
`499995000 499992500 499990000 ...` view save

Datatähti 2025 alku

Tikut

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

Tasks

Submissions (Pikaksi)