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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#65634#5141. Identical ParityJesWA 17ms3348kbC++171.5kb2022-12-02 16:23:362022-12-02 16:23:36

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2022-12-02 16:23:36]
  • 评测
  • 测评结果:WA
  • 用时:17ms
  • 内存:3348kb
  • [2022-12-02 16:23:36]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;
#define IOS ios::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr)
#define rep(a, b, c) for(int (a)=(b);(a)<=(c);(a)++)
#define per(a, b, c) for(int (a)=(b);(a)>=(c);(a)--)
#define mset(var, val) memset(var,val,sizeof(var))
#define ll long long
#define itn int
#define fi first
#define se second
#define no "NO\n"
#define yes "YES\n"
#define pb push_back
#define endl "\n"
#define pii pair<int,int>
#define pll pair<ll,ll>
#define dbg(x...) do{cout<<#x<<" -> ";err(x);}while (0)

void err() { cout << '\n'; }

template<class T, class... Ts>
void err(T arg, Ts... args) {
    cout << arg << ' ';
    err(args...);
}

const int N = 2e5 + 5;
const int inf = 0x3f3f3f3f;
const ll INF = 0x3f3f3f3f3f3f3f3f;
const int mod = 1e9 + 7;
const double eps = 1e-8;
const double pi = acos(-1.0);

void solve() {
    itn n,k;
    cin>>n>>k;
    int x=k/2;
    int y=k-x;
    int t=n/k;
    int z=n%k;
    if(n==1)    cout<<yes;
    else if(k==1)   cout<<no;
    else if(k%2==0) cout<<yes;

    else if(z>=t-1){
        if(x>=t-1 && (z-t+1)%2==0){
            cout<<yes;
        }else if(x>=t && (z-t)%2==0){
            cout<<yes;
        }else if(x>=t+1 && (z-t-1)%2==0){
            cout<<yes;
        }
        else    cout<<no;
    }
    else{
        cout<<no;
    }

}

int main() {
    IOS;
    int t = 1;
    cin >> t;
    while (t--) {
        solve();
    }
    return 0;
}

Details

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Test #1:

score: 100
Accepted
time: 2ms
memory: 3292kb

input:

3
3 1
4 2
5 3

output:

NO
YES
YES

result:

ok 3 token(s): yes count is 2, no count is 1

Test #2:

score: -100
Wrong Answer
time: 17ms
memory: 3348kb

input:

100000
1 1
2 1
2 2
3 1
3 2
3 3
4 1
4 2
4 3
4 4
5 1
5 2
5 3
5 4
5 5
6 1
6 2
6 3
6 4
6 5
6 6
7 1
7 2
7 3
7 4
7 5
7 6
7 7
8 1
8 2
8 3
8 4
8 5
8 6
8 7
8 8
9 1
9 2
9 3
9 4
9 5
9 6
9 7
9 8
9 9
10 1
10 2
10 3
10 4
10 5
10 6
10 7
10 8
10 9
10 10
11 1
11 2
11 3
11 4
11 5
11 6
11 7
11 8
11 9
11 10
11 11
12 1
...

output:

YES
NO
YES
NO
YES
YES
NO
YES
YES
YES
NO
YES
YES
YES
YES
NO
YES
NO
YES
YES
YES
NO
YES
YES
YES
YES
YES
YES
NO
YES
NO
YES
YES
YES
YES
YES
NO
YES
NO
YES
YES
YES
YES
YES
YES
NO
YES
NO
YES
NO
YES
YES
YES
YES
YES
NO
YES
NO
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
YES...

result:

wrong answer expected NO, found YES [96th token]