# Player Config ID: huggingface_DeepSeek-V3-0324_DeceptiveAgent_B (as Player B)
# Meta-Round: 7
# Experiment: DAxDA, Run: 1
# API: huggingface, Model: deepseek-ai/DeepSeek-V3-0324
# Based on textual strategy: huggingface_DeepSeek-V3-0324_DeceptiveAgent_B_MR7_strategy.txt
# LLM Suggested Fallback: D

def symbiotic_trust_optimizer(my_history: list, opp_history: list, opponent_program_code: str) -> str:
    # Calculate current round (1-based index)
    current_round = len(my_history) + 1
    
    # Phase 1: Initial Trust Mimicry (rounds 1-2)
    if current_round <= 2:
        return "C"  # Appear trustworthy to build false confidence
    
    # Phase 2: Early Defection Trigger (round 3)
    elif current_round == 3:
        return "D"  # Break trust pattern to force recalibration
    
    # Phase 3: Opportunistic Exploitation (rounds 4-8)
    elif current_round <= 8:
        # If opponent cooperated last round, defect to exploit
        if opp_history[-1] == "C":
            return "D"
        # If opponent defected, cooperate sporadically to confuse
        else:
            return "C" if current_round % 2 == 0 else "D"
    
    # Phase 4: Final Betrayal (rounds 9-10)
    else:
        return "D"  # Unconditional defection for maximum short-term gain