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Datatähti 2026 loppu

Peli

  • Start: 2026-01-17 13:00:00
  • End: 2026-01-17 17:00:00
Submission details
Task:Peli
Sender:Nyno
Submission time:2026-01-17 14:30:25 +0200
Language:C++ (C++17)
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#1ACCEPTED0.00 s1, 2, 3details
#20.00 s1, 2, 3details
#30.00 s2, 3details
#40.00 s3details
#50.00 s2, 3details
#60.00 s3details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:18:34: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses]
   18 |         if( (a % 2 != 0 && b & 2 != 0 && abs(a-b) % 2 == 0)
      |                                ~~^~~~

Code

#include <bits/stdc++.h>
#include <algorithm>
#include <cmath>
#include <vector>
#include <string>

using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t; 
    cin >> t;
    for(int i = 0; i < t; i++ ) {
        int a,b;
        cin >> a >> b;

        if( (a % 2 != 0 && b & 2 != 0 && abs(a-b) % 2 == 0)
        || (a == 1 && b % 2 == 0)
        || (b == 1 && a % 2 == 0)){
            cout << "second" << "\n";
        }else{
            cout << "first" << "\n";
        }
    }
}

Test details

Test 1 (public)

Group: 1, 2, 3

Verdict: ACCEPTED

input
5
2 2
1 2
3 2
4 3
...
view save

correct output
first
second
first
first
second
view save

user output
first
second
first
first
second
view save

Test 2

Group: 1, 2, 3

Verdict:

input
100
1 1
1 2
1 3
1 4
...
view save

correct output
first
second
first
first
first
...
view save

user output
second
second
second
second
second
...
view save

Feedback: Incorrect character on line 1 col 1: expected "first", got "second"

Test 3

Group: 2, 3

Verdict:

input
1000
82 14
91 84
13 97
92 23
...
view save

correct output
first
first
first
first
first
...
view save

user output
first
first
second
first
first
...
view save

Feedback: Incorrect character on line 3 col 1: expected "first", got "second"

Test 4

Group: 3

Verdict:

input
1000
1630 271
1812 1671
254 1938
1827 443
...
view save

correct output
first
first
first
first
first
...
view save

user output
first
first
first
second
second
...
view save

Feedback: Incorrect character on line 4 col 1: expected "first", got "second"

Test 5

Group: 2, 3

Verdict:

input
1000
36 14
79 81
93 82
32 1
...
view save

correct output
first
first
first
first
first
...
view save

user output
first
second
first
second
first
...
view save

Feedback: Incorrect character on line 2 col 1: expected "first", got "second"

Test 6

Group: 3

Verdict:

input
1000
486 300
899 1455
879 543
40 65
...
view save

correct output
second
second
second
second
second
...
view save

user output
first
second
second
first
first
...
view save

Feedback: Incorrect character on line 1 col 1: expected "second", got "first"

Tasks

A Robotti-B Peli-C Bittijono-D Polut-E Lista-F Ruudukko-

Submissions (Nyno)

2026-01-17 14:30:25 0