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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#690336#5141. Identical ParityIsacBieber#WA 11ms3732kbC++231.7kb2024-10-30 21:40:232024-10-30 21:40:23

Judging History

你现在查看的是最新测评结果

  • [2024-10-30 21:40:23]
  • 评测
  • 测评结果:WA
  • 用时:11ms
  • 内存:3732kb
  • [2024-10-30 21:40:23]
  • 提交

answer

#include <bits/stdc++.h>
// #include<bits/extc++.h>
#define int long long
#define endl '\n'
#define eps 1e-7
#define pb push_back
#define eb emplace_back
#define debug(x) cerr << #x << ": " << x << '\n';
// using namespace __gnu_pbds;
using namespace std;
using ll = long long;
using ld = long double;
using pll = pair<ll, ll>;
using pii = pair<int, int>;
using ull = unsigned long long;
const int N = 1e6 + 5, MOD = 1e9 + 7;
mt19937_64 rnd(chrono::steady_clock::now().time_since_epoch().count());
int n, k;
int exgcd(int a, int b, int& x, int& y) {
    if (!b) {
        x = 1, y = 0;
        return a;
    }
    int d = exgcd(b, a % b, x,y);
    int t=x;
    x=y;
    y =t- (a / b) * y;
    return d;
}
void isac()
{
    cin>>n>>k;
    if(n == 1) {
        std::cout << "Yes\n";
        return;
    }
    if(k == 1) {
        std::cout << "No\n";
        return;
    }
    int l1 = n/k, c1 = k - (n % k), l2 = n/k + 1, c2 = n % k;
    int cnt = n/2;
    if(l1 % 2 == 0) swap(l1, l2), swap(c1, c2);
    int x, y;
    exgcd(l1, l2, x, y);
    int l = std::max(((-cnt * y) + l1 - 1)/l1, ((cnt * x -c1) + l2 - 1)/l2);int r = std::min((cnt * x)/l2, (c2 - cnt*y)/ l1);
    // cout << l1 << " " << c1 << " " << l2 << " " << c2 << "\n";
    // cout << x << " " << y << " " << l << " " << r << "\n";
    if(l > r) {
        std::cout << "No\n"; 
    }
    else std::cout << "Yes\n";

}
signed main(void)
{
    ios::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    int T = 1;
    cin >> T;
    while (T--) isac();
    return 0;
}
/*
    Zena youth together.
    Such a pretty name.
    There will be a long story.
    Time will tell all.
*/

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3580kb

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: 11ms
memory: 3732kb

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
No
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
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
N...

result:

wrong answer expected YES, found NO [17th token]