Gặp nhau
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Gửi bài giải
Điểm:
5,00 (OI)
Giới hạn thời gian:
1.0s
Giới hạn bộ nhớ:
256M
Input:
stdin
Output:
stdout
Dạng bài
Ngôn ngữ cho phép
C, C++, Java, Kotlin, Pascal, PyPy, Python, Scratch
Một tàu đánh cá có ngư dân bị tai nạn cần cấp cứu đã gọi điện về cơ sở y tế ở đảo gần nhất cách đó d hải lý. Để có thể sớm sơ cứu, tàu đánh cá đổi hướng, đi thẳng về phía đảo với vận tốc ~v_1~ hải lý/giờ, đồng thời từ đảo người ta cũng cho một tàu cứu nạn nhằm vào hướng tàu cá đi với vận tốc ~v_2~ hải lý/giờ.
Yêu cầu: Xác định sau bao giờ hai tàu gặp nhau?
Dữ liệu vào:
- Nhập từ bàn phím các số nguyên ~d,v_1,v_2~
Giới hạn:
- ~1≤v_1,v_2,d≤10^4~
Kết quả:
- Một số thực cho biết kết quả của bài toán với độ chính xác 5 chữ số thập phân
Ví dụ:
Input
65 12 23
Output
1.85714
Bình luận
=━━╤╦̵̵͇デ╦︻
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~~x^2~~