1 条题解
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0陆霆轩 (lutingxuan) LV 10 MOD @ 2024-10-2 22:22:09
#include <bits/stdc++.h> double A, B, C, x_1, y_1, x_2, y_2; double A2mB2, A2pB2, B2mA2, AB, AC, BC; int main(){ std::cin >> x_1 >> y_1; std::cin >> A >> B >> C; AB = A * B; AC = A * C; BC = B * C; A2pB2 = A * A + B * B; A2mB2 = A * A - B * B; B2mA2 = B * B - A * A; x_2 = - (2 * AB * y_1 + A2mB2 * x_1 + 2 * AC) / A2pB2; y_2 = - (B2mA2 * y_1 + 2 * AB * x_1 + 2 * BC) / A2pB2; printf("%.3f %.3f", x_2, y_2); return 0; }
- 1
信息
- ID
- 3211
- 时间
- 1000ms
- 内存
- 256MiB
- 难度
- 8
- 标签
- 递交数
- 17
- 已通过
- 7
- 上传者