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QOJ

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
#818122	#9668. Isoball: 2D Version	ccsurzw	WA	13ms	3816kb	C++23	1.9kb	2024-12-17 16:35:58	2024-12-17 16:35:58

Judging History

你现在查看的是最新测评结果

[2024-12-17 16:35:58]
评测

测评结果：WA
用时：13ms
内存：3816kb

查看

[2024-12-17 16:35:58]
提交

answer

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef long double ld;
#define N 201000
#define endl '\n'
ll mod = 998244353;
ld x, y, r, Vx, Vy,nx,ny;
ld Lx, Ly, Rx, Ry;
ld k, b;
ld get_y(ld x) {
    return k * x + b;
}
ld get_x(ld y) {
    return (y - b) / k;
}
//ld get_dis(ld x, ld y, ld nx,ld ny) {
//    return  sqrt((nx - x) * (nx - x) + (ny - y) * (ny - y))
//}

bool haveSameSign(long double a, long double b) {
    return a * b >= 0;  // 乘积非负，表示符号相同
}
void solve() {
    cin >> x >> y >> r >> Vx >> Vy;
    cin >> Lx >> Ly >> Rx >> Ry;
    

    k = Vy / Vx;
    b = y - k * x;
    

    nx = Lx + r;//新的圆坐标
    ny = get_y(nx);//新的圆坐标
    if (ny - Ly >= r && Ry - ny >= r && Rx - nx >= r) {
        if (haveSameSign(nx - x , Vx) && haveSameSign(ny - y , Vy)) {
            cout << "Yes" << endl;
            return;
        }
    }
    
    nx = Rx - r;//新的圆坐标
    ny = get_y(nx);//新的圆坐标
    if (ny - Ly >= r && Ry - ny >= r && nx - Lx >= r) {
        if (haveSameSign(nx - x, Vx) && haveSameSign(ny - y, Vy)) {
            cout << "Yes" << endl;
            return;
        }
    }

    ny = Ly + r;
    nx = get_x(ny);
    if (nx - Lx >= r && Ry - ny >= r && Rx - nx >= r) {
        if (haveSameSign(nx - x, Vx) && haveSameSign(ny - y, Vy)) {
            cout << "Yes" << endl;
            return;
        }
    }

    ny = Ry - r;
    nx = get_x(ny);
    if (nx - Lx >= r && ny - Ly >= r && Rx - nx >= r) {
        if (haveSameSign(nx - x, Vx) && haveSameSign(ny - y, Vy)) {
            cout << "Yes" << endl;
            return;
        }
    }
    cout << "No" << endl;
}



int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int t = 1;
    cin >> t;
    while (t--) {
        solve();
    }

}

源文件, 语言: C++23

详细

Test #1:

score: 100

Accepted

time: 0ms

memory: 3652kb

input:

5
0 0 1 1 0
2 -2 6 2
0 0 1 1 0
2 0 6 2
0 0 1 1 1
1 1 3 3
0 0 1 -1 -1
1 1 3 3
0 0 1 -1 1
-5 -5 5 5

output:

Yes
No
Yes
No
Yes

result:

ok 5 lines

Test #2:

score: 0

Accepted

time: 0ms

memory: 3816kb

input:

2
0 0 1000000 1000000 1000000
-1000000 -1000000 1000000 1000000
1000000 1000000 1 -1000000 -1000000
-1000000 -1000000 -999999 -999999

output:

Yes
No

result:

ok 2 lines

Test #3:

score: -100

Wrong Answer

time: 13ms

memory: 3740kb

input:

10000
10 -10 10 1 -2
-13 -8 6 -1
-7 -10 3 3 1
-3 -12 14 -9
-9 -2 4 4 -3
-11 7 -8 12
-3 1 8 -1 0
-11 1 19 13
-1 8 9 -3 2
11 -5 17 4
-2 -7 3 -3 5
-12 -14 10 1
0 3 6 -5 3
-11 2 2 16
4 9 6 5 -4
-8 -11 18 -1
0 0 8 4 -2
-10 -15 1 12
8 4 4 5 2
-17 3 8 7
-3 7 10 -4 0
1 0 10 20
-6 -10 5 -3 -1
-20 -20 15 7
5 ...

output:

No
No
No
No
No
Yes
No
No
No
No
No
Yes
No
Yes
No
No
Yes
No
Yes
No
No
No
No
No
Yes
No
No
No
Yes
No
No
No
Yes
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
Yes
Yes
No
No
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes...

result:

wrong answer 161st lines differ - expected: 'Yes', found: 'No'