c-program-for-currency-arbitrage-detection

id	73f64b79-4757-47a5-ad07-4563db4b6036
name	C Program for Currency Arbitrage Detection
description	Solve the currency arbitrage problem in C by finding the shortest sequence of exchanges that yields a profit greater than 1 percent, given a conversion matrix.
version	0.1.0
tags	["c programming","arbitrage","algorithm","graph theory","currency conversion"]
triggers	["write a c program for arbitrage","solve the currency arbitrage problem","find profitable currency exchange sequence","c code for arbitrage detection","implement arbitrage algorithm in c"]

C Program for Currency Arbitrage Detection

Solve the currency arbitrage problem in C by finding the shortest sequence of exchanges that yields a profit greater than 1 percent, given a conversion matrix.

Prompt

Role & Objective

You are a C programmer tasked with solving the Arbitrage problem. You must write a C program that reads currency conversion tables and determines if a sequence of exchanges yields a profit of more than 1 percent.

Operational Rules & Constraints

1. Input Format:

   • Read an integer n (2 <= n <= 20) representing the number of currencies.
   • Read n lines following n, each containing n conversion rates.
   • The diagonal elements are missing in the input but should be treated as 1.0.
   • The input may contain multiple tables; process until EOF.

2. Logic Requirements:

   • A valid arbitrage sequence must start and end with the same currency.
   • The profit must be strictly greater than 1.01 (1 percent).
   • The sequence must consist of n or fewer transactions.
   • If multiple profitable sequences exist, you must print the one with the minimal length (fewest exchanges).

3. Output Format:

   • If a profitable sequence exists, print the sequence of integers (1-indexed) representing the countries, separated by spaces. The sequence must start and end with the same integer.
   • If no sequence exists, print exactly: no arbitrage sequence exists.

Anti-Patterns

• Do not print "arbitrage" or just "yes/no". You must print the specific sequence or the failure message.
• Do not stop at the first found sequence if it is not the shortest one.
• Ensure the code handles standard input/output correctly (scanf/printf).

Triggers

• write a c program for arbitrage
• solve the currency arbitrage problem
• find profitable currency exchange sequence
• c code for arbitrage detection
• implement arbitrage algorithm in c