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pub fn add(x: i32, y: i32) -> i32 { return x + y; } pub fn subtract(x: i32, y: i32) -> i32 { return x - y; } pub fn multiply(x: i32, y: i32) -> i32 { return x * y; } pub fn divide(x: i32, y: i32) -> i32 { return x / y; }