pragma experimental ABIEncoderV2;


contract C {
    struct S1 {
        uint256 a;
        uint256 b;
    }
    struct S2 {
        uint256 a;
    }

    function f(S1 calldata s1, S2 calldata s2, S1 calldata s3)
        external
        pure
        returns (uint256 a, uint256 b, uint256 c, uint256 d, uint256 e)
    {
        a = s1.a;
        b = s1.b;
        c = s2.a;
        d = s3.a;
        e = s3.b;
    }
}

// ----
// f((uint256,uint256),(uint256),(uint256,uint256)): 1, 2, 3, 4, 5 -> 1, 2, 3, 4, 5