CSES - Aalto Competitive Programming 2026 - wk5 - Wed

Submission details
Task:	Program
Sender:	aalto26ew_006
Submission time:	2026-09-30 16:30:00 +0300
Language:	C++ (C++20)
Status:	READY
Result:	ACCEPTED

Test results
test	verdict
#1	ACCEPTED	details
#2	ACCEPTED	details
#3	ACCEPTED	details
#4	ACCEPTED	details
#5	ACCEPTED	details
#6	ACCEPTED	details
#7	ACCEPTED	details
#8	ACCEPTED	details
#9	ACCEPTED	details
#10	ACCEPTED	details
#11	ACCEPTED	details
#12	ACCEPTED	details
#13	ACCEPTED	details
#14	ACCEPTED	details
#15	ACCEPTED	details
#16	ACCEPTED	details
#17	ACCEPTED	details
#18	ACCEPTED	details
#19	ACCEPTED	details
#20	ACCEPTED	details
#21	ACCEPTED	details
#22	ACCEPTED	details
#23	ACCEPTED	details
#24	ACCEPTED	details
#25	ACCEPTED	details
#26	ACCEPTED	details
#27	ACCEPTED	details
#28	ACCEPTED	details
#29	ACCEPTED	details
#30	ACCEPTED	details

Code

#include <iostream>
using namespace std;

int main() {
    long long n;
    cin >> n;
    // n = 2^k + 3*M
    int bestK = -1;
    long long best = 0;
    for (int k = 0; k < 62 && (1LL << k) <= n; k++) {
        long long d = n - (1LL << k);
        if (d % 3) continue;
        long long M = d / 3;
        long long cost = k + __builtin_popcountll(M & ((1LL << k) - 1)) + (M >> k);
        if (bestK < 0 || cost < best) best = cost, bestK = k;
    }
    if (bestK < 0) {
        cout << 0 << "\n";
        return 0;
    }
    long long M = (n - (1LL << bestK)) / 3;
    string out;
    for (long long i = 0; i < (M >> bestK); i++) out += "ADD\n";
    for (int i = bestK - 1; i >= 0; i--) {
        out += "MUL\n";
        if (M >> i & 1) out += "ADD\n";
    }
    out += "END\n";
    cout << best + 1 << "\n" << out;
}

Test details

Test 1

Subtask:

Verdict: ACCEPTED

input
`58` view save

correct output
`8 MUL ADD MUL ADD ...` view save

user output
`8 ADD ADD ADD ADD ...` view save

Test 2

Subtask:

Verdict: ACCEPTED

input
`72` view save

correct output
`0` view save

user output
`0` view save

Test 3

Subtask:

Verdict: ACCEPTED

input
`83` view save

correct output
`8 MUL ADD MUL MUL ...` view save

user output
`8 ADD ADD ADD MUL ...` view save

Test 4

Subtask:

Verdict: ACCEPTED

input
`53` view save

correct output
`8 ADD MUL ADD MUL ...` view save

user output
`8 ADD MUL ADD MUL ...` view save

Test 5

Subtask:

Verdict: ACCEPTED

input
`100` view save

correct output
`8 ADD MUL ADD MUL ...` view save

user output
`8 ADD MUL ADD MUL ...` view save

Test 6

Subtask:

Verdict: ACCEPTED

input
`64` view save

correct output
`6 ADD MUL MUL MUL ...` view save

user output
`6 ADD MUL MUL MUL ...` view save

Test 7

Subtask:

Verdict: ACCEPTED

input
`84` view save

correct output
`0` view save

user output
`0` view save

Test 8

Subtask:

Verdict: ACCEPTED

input
`60` view save

correct output
`0` view save

user output
`0` view save

Test 9

Subtask:

Verdict: ACCEPTED

input
`51` view save

correct output
`0` view save

user output
`0` view save

Test 10

Subtask:

Verdict: ACCEPTED

input
`77` view save

correct output
`9 ADD ADD MUL ADD ...` view save

user output
`9 ADD ADD MUL ADD ...` view save

Test 11

Subtask:

Verdict: ACCEPTED

input
`941694` view save

correct output
`0` view save

user output
`0` view save

Test 12

Subtask:

Verdict: ACCEPTED

input
`905674` view save

correct output
`30 MUL ADD MUL ADD ...` view save

user output
`30 ADD ADD ADD ADD ...` view save

Test 13

Subtask:

Verdict: ACCEPTED

input
`908426` view save

correct output
`29 ADD MUL ADD MUL ...` view save

user output
`29 ADD MUL ADD MUL ...` view save

Test 14

Subtask:

Verdict: ACCEPTED

input
`960500` view save

correct output
`31 ADD ADD MUL MUL ...` view save

user output
`31 ADD ADD MUL MUL ...` view save

Test 15

Subtask:

Verdict: ACCEPTED

input
`902101` view save

correct output
`27 MUL ADD MUL ADD ...` view save

user output
`27 ADD ADD ADD ADD ...` view save

Test 16

Subtask:

Verdict: ACCEPTED

input
`994208` view save

correct output
`27 ADD ADD MUL MUL ...` view save

user output
`27 ADD ADD MUL MUL ...` view save

Test 17

Subtask:

Verdict: ACCEPTED

input
`923538` view save

correct output
`0` view save

user output
`0` view save

Test 18

Subtask:

Verdict: ACCEPTED

input
`950287` view save

correct output
`24 MUL ADD MUL ADD ...` view save

user output
`24 ADD ADD ADD ADD ...` view save

Test 19

Subtask:

Verdict: ACCEPTED

input
`950516` view save

correct output
`29 ADD ADD MUL MUL ...` view save

user output
`29 ADD ADD MUL MUL ...` view save

Test 20

Subtask:

Verdict: ACCEPTED

input
`921882` view save

correct output
`0` view save

user output
`0` view save

Test 21

Subtask:

Verdict: ACCEPTED

input
`933942296856681219` view save

correct output
`0` view save

user output
`0` view save

Test 22

Subtask:

Verdict: ACCEPTED

input
`955775764385016720` view save

correct output
`0` view save

user output
`0` view save

Test 23

Subtask:

Verdict: ACCEPTED

input
`981578916796073406` view save

correct output
`0` view save

user output
`0` view save

Test 24

Subtask:

Verdict: ACCEPTED

input
`927875200723222396` view save

correct output
`94 MUL ADD MUL MUL ...` view save

user output
`94 ADD ADD ADD MUL ...` view save

Test 25

Subtask:

Verdict: ACCEPTED

input
`990125206148420558` view save

correct output
`84 ADD MUL ADD MUL ...` view save

user output
`84 ADD MUL ADD MUL ...` view save

Test 26

Subtask:

Verdict: ACCEPTED

input
`964804802247123102` view save

correct output
`0` view save

user output
`0` view save

Test 27

Subtask:

Verdict: ACCEPTED

input
`996610423667404231` view save

correct output
`96 MUL ADD MUL ADD ...` view save

user output
`96 ADD ADD ADD ADD ...` view save

Test 28

Subtask:

Verdict: ACCEPTED

input
`948665008088793691` view save

correct output
`86 MUL ADD MUL ADD ...` view save

user output
`86 ADD ADD ADD ADD ...` view save

Test 29

Subtask:

Verdict: ACCEPTED

input
`969397787818953279` view save

correct output
`0` view save

user output
`0` view save

Test 30

Subtask:

Verdict: ACCEPTED

input
`918471787211371085` view save

correct output
`90 ADD MUL ADD MUL ...` view save

user output
`90 ADD MUL ADD MUL ...` view save

Aalto Competitive Programming 2026 - wk5 - Wed

Program

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

Tasks

Submissions (aalto26ew_006)