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ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#647701 | #5141. Identical Parity | comp_towels_cat | WA | 10ms | 3820kb | C++17 | 4.4kb | 2024-10-17 15:18:47 | 2024-10-17 15:18:47 |
Judging History
answer
//#pragma GCC optimize(2)
//#pragma GCC optimize(3,"Ofast","inline")
#include <bits/stdc++.h>
#define FOR(i, j, k) for(int i = (j);i <= (k);i ++)
#define ROF(i, j, k) for(int i = (j);i >= (k);i --)
#define For(i, j, k) for(int i = (j);i < (k);i ++)
#define Rof(i, j, k) for(int i = (j);i > (k);i --)
#define ull unsigned long long
#define int long long
#define PII pair<int,int>
#define ULL unsigned long long
#define db double
#define x first
#define y second
#define sp(x) fixed << setprecision(x)
#define all(x) x.begin(), x.end()
#define unq_all(x) x.erase(unique(all(x)), x.end())
#define M(x) x %= mod, x += mod, x %= mod
#define YES cout << "YES\n"
#define NO cout << "NO\n"
#define Yes cout << "Yes\n"
#define No cout << "No\n"
#define ANS cout << ans << '\n'
#define de(p) cout << #p << ' ' << p << '\n'
#define END(i, n) (i == n ? '\n' : ' ')
#define double long double
#define RED cout << "\033[91m"
#define GREEN cout << "\033[92m"
#define YELLOW cout << "\033[93m"
#define BLUE cout << "\033[94m"
#define MAGENTA cout << "\033[95m"
#define CYAN cout << "\033[96m"
#define RESET cout << "\033[0m"
// 红色
#define DEBUG1(x) \
RED; \
cout << #x << " : " << x << endl; \
RESET;
// 绿色
#define DEBUG2(x) \
GREEN; \
cout << #x << " : " << x << endl; \
RESET;
// 蓝色
#define DEBUG3(x) \
BLUE; \
cout << #x << " : " << x << endl; \
RESET;
// 品红
#define DEBUG4(x) \
MAGENTA; \
cout << #x << " : " << x << endl; \
RESET;
// 青色
#define DEBUG5(x) \
CYAN; \
cout << #x << " : " << x << endl; \
RESET;
// 黄色
#define DEBUG6(x) \
YELLOW; \
cout << #x << " : " << x << endl; \
RESET;
using namespace std;
const int N = 5e5 + 10, M = 1e5 + 10, INF = 1e9, mod = 998244353;
int n, m, k;
int exgcd(int a,int b,int &x,int &y)
{
if (b == 0)
{
x = 1, y = 0;
return a;
}
int d = exgcd(b,a % b,y,x);
y -= a / b * x;
return d;
}
int gcd(int a, int b)
{
return b ? gcd(b,a % b) : a;
}
int lcm(int a, int b)
{
return a * b / gcd(a,b);
}
void solve()
{
cin >> n >> k;
// int odd = (n + 1) / 2;
// int even = n / 2;
if (n % k == 0)
{
int t = n / k;
if (t % 2 == 1 || n % 2 == 1) NO;
else YES;
}
else
{
int c1 = n % k,v1 = n / k + 1;
int c2 = k - n % k,v2 = n / k;
int x,y;
int d = exgcd(v1,v2,x,y);
m = n / 2;
if (m % d == 0)
{
//x * v1 + y * v2 = m
int detx = v1 / d;
int dety = -v2 / d;
int t = m / d;
x *= t,y *= t;
// cout << x << ' ' << v1 <<' ' << y << ' ' << v2 << ' ' << m << '\n';
if (x < 0)
{
int T = (-x + detx - 1) / detx;
x += detx * T;
y += dety * T;
}
else
{
int T = x / detx;
x -= detx * T;
y -= dety * T;
}
// DEBUG6(c1)
// DEBUG6(c2)
// cout << x << ' ' << v1 <<' ' << y << ' ' << v2 << ' ' << m << '\n';
if (y > c2)
{
detx *= -1,dety *= -1;
// DEBUG6(detx)
// DEBUG6(dety)
int T = (y - c2 + dety - 1) / dety;
y -= dety * T;
x -= detx * T;
// cout << x << ' ' << v1 <<' ' << y << ' ' << v2 << ' ' << m << '\n';
if (x >= 0 && x <= c1) YES;
else NO;
}
else if (y < 0) NO;
else YES;
}
else
{
NO;
}
}
}
signed main()
{
ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
auto t = clock();
int T = 1;
cin >> T;
while (T--)
{
solve();
}
auto tt = clock();
// cout << "Time: " << 1000.0 * (tt - t) / CLOCKS_PER_SEC << "ms" << endl;
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3820kb
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: 10ms
memory: 3676kb
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:
NO YES NO NO YES NO YES YES YES NO NO NO YES YES NO YES NO YES YES YES NO NO NO NO NO YES YES NO YES YES NO YES NO YES YES NO NO NO NO NO NO YES YES YES NO YES NO NO NO YES NO YES YES YES NO NO NO NO NO NO NO YES YES YES YES NO YES YES YES NO NO YES NO YES YES YES YES NO NO NO NO NO NO NO NO NO YES ...
result:
wrong answer expected YES, found NO [1st token]