CSES - Leirikisa 9.12.2021 - Results
Submission details
Task:Omenat
Sender:tonero
Submission time:2021-12-09 15:15:22 +0200
Language:C++ (C++17)
Status:READY
Result:83
Feedback
groupverdictscore
#10
#2ACCEPTED30
#3ACCEPTED53
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1details
#2ACCEPTED0.01 s1details
#30.01 s1details
#4ACCEPTED0.01 s1details
#5ACCEPTED0.01 s1details
#60.01 s1details
#7ACCEPTED0.01 s2details
#8ACCEPTED0.01 s2details
#9ACCEPTED0.01 s2details
#10ACCEPTED0.01 s2details
#11ACCEPTED0.01 s2details
#12ACCEPTED0.01 s2details
#13ACCEPTED0.02 s3details
#14ACCEPTED0.03 s3details
#15ACCEPTED0.03 s3details
#16ACCEPTED0.02 s3details
#17ACCEPTED0.03 s3details
#18ACCEPTED0.03 s3details

Compiler report

input/code.cpp: In function 'bool step(long long int, std::vector<int>, int)':
input/code.cpp:20:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < vec2.size(); ++i) {
                     ~~^~~~~~~~~~~~~

Code

#include <bits/stdc++.h>
using namespace std;
#define ll long long
vector<int> vec = {};
bool ret = false;
bool step(ll sum, vector<int> vec2, int amount){
for (int i : vec2) {
if(i == 0) continue;
if((sum - i) % 3 == 0){
cout << amount;
ret = true;
return true;
}
}
for (int i = 0; i < vec2.size(); ++i) {
if(vec2[i] == 0) continue;
vector<int> nVec = vec2;
nVec[i] = 0;
if(step(sum - vec2[i], nVec, amount - 1)) return true;
}
return false;
}
int main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int n;
cin >> n;
int b;
vec.reserve(n);
ll sum = 0;
for (int i = 0; i < n; ++i){
cin >> b;
vec.emplace_back(b);
sum += b;
}
if(sum % 3 == 0){
cout << n;
flush(std::cout);
return 0;
}
sort(vec.begin(), vec.end());
step(sum, vec, n-1);
if(!ret){
cout << 0;
}
flush(std::cout);
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
20
34 98 42 72 75 91 76 30 98 7 1...

correct output
20

user output
20

Test 2

Group: 1

Verdict: ACCEPTED

input
20
20 97 85 24 47 57 69 92 21 72 ...

correct output
19

user output
19

Test 3

Group: 1

Verdict:

input
20
36 35 3 15 84 14 24 33 39 27 7...

correct output
18

user output
17

Test 4

Group: 1

Verdict: ACCEPTED

input
20
75 87 27 66 14 48 34 1 52 47 7...

correct output
20

user output
20

Test 5

Group: 1

Verdict: ACCEPTED

input
20
83 7 54 38 21 51 61 61 14 32 3...

correct output
19

user output
19

Test 6

Group: 1

Verdict:

input
20
76 24 28 45 36 87 81 21 48 43 ...

correct output
18

user output
16

Test 7

Group: 2

Verdict: ACCEPTED

input
100
9 48 27 13 12 23 23 35 14 58 2...

correct output
100

user output
100

Test 8

Group: 2

Verdict: ACCEPTED

input
100
22 87 66 23 77 17 41 66 31 40 ...

correct output
99

user output
99

Test 9

Group: 2

Verdict: ACCEPTED

input
100
90 50 48 47 20 93 36 48 69 2 6...

correct output
98

user output
98

Test 10

Group: 2

Verdict: ACCEPTED

input
100
88 39 9 21 51 92 94 75 71 19 8...

correct output
100

user output
100

Test 11

Group: 2

Verdict: ACCEPTED

input
100
76 37 49 50 59 68 6 100 48 18 ...

correct output
99

user output
99

Test 12

Group: 2

Verdict: ACCEPTED

input
100
78 45 100 25 90 85 33 90 45 54...

correct output
98

user output
98

Test 13

Group: 3

Verdict: ACCEPTED

input
100000
460655049 593289072 315159623 ...

correct output
100000

user output
100000

Test 14

Group: 3

Verdict: ACCEPTED

input
100000
935436362 204516709 337519402 ...

correct output
99999

user output
99999

Test 15

Group: 3

Verdict: ACCEPTED

input
100000
68654915 40061376 215300034 43...

correct output
99998

user output
99998

Test 16

Group: 3

Verdict: ACCEPTED

input
100000
435410962 22254303 500625758 6...

correct output
100000

user output
100000

Test 17

Group: 3

Verdict: ACCEPTED

input
100000
230562634 84329865 874955526 8...

correct output
99999

user output
99999

Test 18

Group: 3

Verdict: ACCEPTED

input
100000
29734968 168066517 710394372 3...

correct output
99998

user output
99998