from dataclasses import dataclass
from typing import List, Tuple, Dict


@dataclass(frozen=True)
class LocalArbProblem:
    asset_pair: Tuple[str, str]
    target_mispricing: float
    liquidity_budget: float
    latency_budget: float


@dataclass
class SharedSignals:
    deltas: List[float]
    cross_venue_corr: float
    liquidity_availability: Dict[str, float]
    latency_proxy: float