import type { Var } from './var.js';
import type { LinExpr } from './expr.js';
import type { Constraint } from './constraint.js';
export interface LPFormatInput {
    objective: LinExpr | null;
    sense: 'minimize' | 'maximize';
    constraints: Constraint[];
    variables: Var[];
}
export declare function toLPFormat(input: LPFormatInput): string;
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